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13930997 = 315361139
BaseRepresentation
bin110101001001…
…000111110101
3222012202201212
4311021013311
512031242442
61214331205
7226261103
oct65110765
928182655
1013930997
117955623
1247b9b05
132b69bc2
141bc8c73
151352a82
hexd491f5

13930997 has 16 divisors (see below), whose sum is σ = 14999040. Its totient is φ = 12916800.

The previous prime is 13930957. The next prime is 13931003. The reversal of 13930997 is 79903931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13930997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13930927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100154 + ... + 100292.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 213930997 is an apocalyptic number.

It is an amenable number.

13930997 is a deficient number, since it is larger than the sum of its proper divisors (1068043).

13930997 is a wasteful number, since it uses less digits than its factorization.

13930997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 13930997 is about 3732.4250829722. The cubic root of 13930997 is about 240.6176049226.

The spelling of 13930997 in words is "thirteen million, nine hundred thirty thousand, nine hundred ninety-seven".

Divisors: 1 31 53 61 139 1643 1891 3233 4309 7367 8479 100223 228377 262849 449387 13930997