715972391 has 8 divisors (see below), whose sum is σ = 759098304. Its totient is φ = 672958720.

The previous prime is 715972379. The next prime is 715972399. The reversal of 715972391 is 193279517.

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 715972391 - 2¹⁰ = 715971367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715972399) 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, 14735 + ... + 40608.

It is an arithmetic number, because the mean of its divisors is an integer number (94887288).

Almost surely, 2^715972391 is an apocalyptic number.

715972391 is a deficient number, since it is larger than the sum of its proper divisors (43125913).

715972391 is a wasteful number, since it uses less digits than its factorization.

715972391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56121.

The product of its digits is 119070, while the sum is 44.

The square root of 715972391 is about 26757.6604171590. The cubic root of 715972391 is about 894.6065875990.

The spelling of 715972391 in words is "seven hundred fifteen million, nine hundred seventy-two thousand, three hundred ninety-one".