13959638 has 16 divisors (see below), whose sum is σ = 26106624. Its totient is φ = 5438760.

The previous prime is 13959629. The next prime is 13959653. The reversal of 13959638 is 83695931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45170 + ... + 45477.

It is an arithmetic number, because the mean of its divisors is an integer number (1631664).

Almost surely, 2^13959638 is an apocalyptic number.

13959638 is a deficient number, since it is larger than the sum of its proper divisors (12146986).

13959638 is a wasteful number, since it uses less digits than its factorization.

13959638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90667.

The product of its digits is 174960, while the sum is 44.

The square root of 13959638 is about 3736.2598946005. The cubic root of 13959638 is about 240.7823888070.

The spelling of 13959638 in words is "thirteen million, nine hundred fifty-nine thousand, six hundred thirty-eight".