872397 has 16 divisors (see below), whose sum is σ = 1312000. Its totient is φ = 572832.

The previous prime is 872393. The next prime is 872411. The reversal of 872397 is 793278.

It is not a de Polignac number, because 872397 - 2² = 872393 is a prime.

It is a super-2 number, since 2×872397² = 1522153051218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (82000).

2⁸⁷²³⁹⁷ is an apocalyptic number.

It is an amenable number.

872397 is a deficient number, since it is larger than the sum of its proper divisors (439603).

872397 is a wasteful number, since it uses less digits than its factorization.

872397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 491 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 872397 is about 934.0219483503. The cubic root of 872397 is about 95.5516199829.

The spelling of 872397 in words is "eight hundred seventy-two thousand, three hundred ninety-seven".