13639396 has 24 divisors (see below), whose sum is σ = 24837120. Its totient is φ = 6545952.

The previous prime is 13639361. The next prime is 13639427. The reversal of 13639396 is 69393631.

It is a happy number.

It is a nialpdrome in base 11.

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, 35421 + ... + 35803.

It is an arithmetic number, because the mean of its divisors is an integer number (1034880).

Almost surely, 2^13639396 is an apocalyptic number.

It is an amenable number.

13639396 is a deficient number, since it is larger than the sum of its proper divisors (11197724).

13639396 is a wasteful number, since it uses less digits than its factorization.

13639396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 721 counting only the distinct ones).

The product of its digits is 78732, while the sum is 40.

The square root of 13639396 is about 3693.1552905341. The cubic root of 13639396 is about 238.9268988574.

The spelling of 13639396 in words is "thirteen million, six hundred thirty-nine thousand, three hundred ninety-six".