720396939 has 8 divisors (see below), whose sum is σ = 960876432. Its totient is φ = 480091040.

The previous prime is 720396899. The next prime is 720396973. The reversal of 720396939 is 939693027.

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 720396939 - 2⁹ = 720396427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720396139) 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, 33384 + ... + 50549.

It is an arithmetic number, because the mean of its divisors is an integer number (120109554).

Almost surely, 2^720396939 is an apocalyptic number.

720396939 is a deficient number, since it is larger than the sum of its proper divisors (240479493).

720396939 is a wasteful number, since it uses less digits than its factorization.

720396939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86797.

The product of its (nonzero) digits is 551124, while the sum is 48.

The square root of 720396939 is about 26840.2112324028. The cubic root of 720396939 is about 896.4456268600.

The spelling of 720396939 in words is "seven hundred twenty million, three hundred ninety-six thousand, nine hundred thirty-nine".