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13909037 = 611072131
BaseRepresentation
bin110101000011…
…110000101101
3222011122121112
4311003300231
512030042122
61214041405
7226140062
oct65036055
928148545
1013909037
11794007a
1247a9265
132b5cbcc
141bc0c69
15134b2e2
hexd43c2d

13909037 has 8 divisors (see below), whose sum is σ = 14275872. Its totient is φ = 13546800.

The previous prime is 13909033. The next prime is 13909061. The reversal of 13909037 is 73090931.

It is a happy number.

13909037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13909037 - 22 = 13909033 is a prime.

It is a super-2 number, since 2×139090372 = 386922620534738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13908994 and 13909012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5462 + ... + 7592.

It is an arithmetic number, because the mean of its divisors is an integer number (1784484).

Almost surely, 213909037 is an apocalyptic number.

It is an amenable number.

13909037 is a deficient number, since it is larger than the sum of its proper divisors (366835).

13909037 is a wasteful number, since it uses less digits than its factorization.

13909037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 13909037 is about 3729.4821356322. The cubic root of 13909037 is about 240.4911066425.

Adding to 13909037 its reverse (73090931), we get a palindrome (86999968).

The spelling of 13909037 in words is "thirteen million, nine hundred nine thousand, thirty-seven".

Divisors: 1 61 107 2131 6527 129991 228017 13909037