872470917 has 24 divisors (see below), whose sum is σ = 1290916224. Its totient is φ = 567561984.

The previous prime is 872470901. The next prime is 872470927. The reversal of 872470917 is 719074278.

It is a happy number.

It is not a de Polignac number, because 872470917 - 2⁴ = 872470901 is a prime.

It is a super-2 number, since 2×872470917² = 1522411002021641778, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872470927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146398 + ... + 152240.

It is an arithmetic number, because the mean of its divisors is an integer number (53788176).

Almost surely, 2^872470917 is an apocalyptic number.

It is an amenable number.

872470917 is a deficient number, since it is larger than the sum of its proper divisors (418445307).

872470917 is a wasteful number, since it uses less digits than its factorization.

872470917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249 (or 6246 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 872470917 is about 29537.6186751742. The cubic root of 872470917 is about 955.5431855924.

The spelling of 872470917 in words is "eight hundred seventy-two million, four hundred seventy thousand, nine hundred seventeen".