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13907299 = 71986757
BaseRepresentation
bin110101000011…
…010101100011
3222011120020011
4311003111203
512030013144
61214025351
7226132030
oct65032543
928146204
1013907299
11793983a
1247a8257
132b5c193
141bc0387
15134aa34
hexd43563

13907299 has 4 divisors (see below), whose sum is σ = 15894064. Its totient is φ = 11920536.

The previous prime is 13907293. The next prime is 13907317. The reversal of 13907299 is 99270931.

13907299 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99270931 = 367270493.

It is a cyclic number.

It is not a de Polignac number, because 13907299 - 23 = 13907291 is a prime.

It is a super-4 number, since 4×139072994 (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13907291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993372 + ... + 993385.

It is an arithmetic number, because the mean of its divisors is an integer number (3973516).

Almost surely, 213907299 is an apocalyptic number.

13907299 is a deficient number, since it is larger than the sum of its proper divisors (1986765).

13907299 is an equidigital number, since it uses as much as digits as its factorization.

13907299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986764.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 13907299 is about 3729.2491201313. The cubic root of 13907299 is about 240.4810893913.

It can be divided in two parts, 139072 and 99, that multiplied together give a triangular number (13768128 = T5247).

The spelling of 13907299 in words is "thirteen million, nine hundred seven thousand, two hundred ninety-nine".

Divisors: 1 7 1986757 13907299