872972913 has 4 divisors (see below), whose sum is σ = 1163963888. Its totient is φ = 581981940.

The previous prime is 872972897. The next prime is 872972921. The reversal of 872972913 is 319279278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 872972913 - 2⁴ = 872972897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (872972923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145495483 + ... + 145495488.

It is an arithmetic number, because the mean of its divisors is an integer number (290990972).

Almost surely, 2^872972913 is an apocalyptic number.

It is an amenable number.

872972913 is a deficient number, since it is larger than the sum of its proper divisors (290990975).

872972913 is a wasteful number, since it uses less digits than its factorization.

872972913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290990974.

The product of its digits is 381024, while the sum is 48.

The square root of 872972913 is about 29546.1150238064. The cubic root of 872972913 is about 955.7264149620.

The spelling of 872972913 in words is "eight hundred seventy-two million, nine hundred seventy-two thousand, nine hundred thirteen".