13393939 has 8 divisors (see below), whose sum is σ = 14560560. Its totient is φ = 12246816.

The previous prime is 13393927. The next prime is 13393949. The reversal of 13393939 is 93939331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13393939 - 2⁹ = 13393427 is a prime.

13393939 is a modest number, since divided by 3939 gives 1339 as remainder.

It is not an unprimeable number, because it can be changed into a prime (13393949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3424 + ... + 6205.

It is an arithmetic number, because the mean of its divisors is an integer number (1820070).

Almost surely, 2^13393939 is an apocalyptic number.

13393939 is a deficient number, since it is larger than the sum of its proper divisors (1166621).

13393939 is a wasteful number, since it uses less digits than its factorization.

13393939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9749.

The product of its digits is 59049, while the sum is 40.

The square root of 13393939 is about 3659.7730803972. The cubic root of 13393939 is about 237.4849571266.

The spelling of 13393939 in words is "thirteen million, three hundred ninety-three thousand, nine hundred thirty-nine".