872377871 has 4 divisors (see below), whose sum is σ = 872934744. Its totient is φ = 871821000.

The previous prime is 872377861. The next prime is 872377889. The reversal of 872377871 is 178773278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178773278 = 2 ⋅89386639.

It is a cyclic number.

It is not a de Polignac number, because 872377871 - 2¹⁰ = 872376847 is a prime.

It is a super-2 number, since 2×872377871² = 1522086299620985282, 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 (872377841) 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, 276080 + ... + 279221.

It is an arithmetic number, because the mean of its divisors is an integer number (218233686).

Almost surely, 2^872377871 is an apocalyptic number.

872377871 is a deficient number, since it is larger than the sum of its proper divisors (556873).

872377871 is a wasteful number, since it uses less digits than its factorization.

872377871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556872.

The product of its digits is 921984, while the sum is 50.

The square root of 872377871 is about 29536.0435908400. The cubic root of 872377871 is about 955.5092159283.

The spelling of 872377871 in words is "eight hundred seventy-two million, three hundred seventy-seven thousand, eight hundred seventy-one".