13349639 has 2 divisors, whose sum is σ = 13349640. Its totient is φ = 13349638.

The previous prime is 13349629. The next prime is 13349653. The reversal of 13349639 is 93694331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13349639 is a prime.

It is a super-2 number, since 2×13349639² = 356425722860642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13349629) 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 as a sum of consecutive naturals, namely, 6674819 + 6674820.

It is an arithmetic number, because the mean of its divisors is an integer number (6674820).

Almost surely, 2^13349639 is an apocalyptic number.

13349639 is a deficient number, since it is larger than the sum of its proper divisors (1).

13349639 is an equidigital number, since it uses as much as digits as its factorization.

13349639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 38.

The square root of 13349639 is about 3653.7157798603. The cubic root of 13349639 is about 237.2228434501. Note that the first 3 decimals are identical.

The spelling of 13349639 in words is "thirteen million, three hundred forty-nine thousand, six hundred thirty-nine".