713521939 has 16 divisors (see below), whose sum is σ = 803174400. Its totient is φ = 628933536.

The previous prime is 713521931. The next prime is 713521951. The reversal of 713521939 is 939125317.

It is a cyclic number.

It is not a de Polignac number, because 713521939 - 2³ = 713521931 is a prime.

It is a super-2 number, since 2×713521939² = 1018227114868639442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (713521931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213322 + ... + 216640.

It is an arithmetic number, because the mean of its divisors is an integer number (50198400).

Almost surely, 2^713521939 is an apocalyptic number.

713521939 is a deficient number, since it is larger than the sum of its proper divisors (89652461).

713521939 is a wasteful number, since it uses less digits than its factorization.

713521939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074.

The product of its digits is 51030, while the sum is 40.

The square root of 713521939 is about 26711.8314422654. The cubic root of 713521939 is about 893.5848088001.

The spelling of 713521939 in words is "seven hundred thirteen million, five hundred twenty-one thousand, nine hundred thirty-nine".