872386771 has 4 divisors (see below), whose sum is σ = 879046344. Its totient is φ = 865727200.

The previous prime is 872386769. The next prime is 872386783. The reversal of 872386771 is 177683278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 872386771 - 2¹ = 872386769 is a prime.

It is a super-2 number, since 2×872386771² = 1522117356431612882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872386741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329590 + ... + 3329851.

It is an arithmetic number, because the mean of its divisors is an integer number (219761586).

Almost surely, 2^872386771 is an apocalyptic number.

872386771 is a deficient number, since it is larger than the sum of its proper divisors (6659573).

872386771 is a wasteful number, since it uses less digits than its factorization.

872386771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6659572.

The product of its digits is 790272, while the sum is 49.

The square root of 872386771 is about 29536.1942538303. The cubic root of 872386771 is about 955.5124652859.

The spelling of 872386771 in words is "eight hundred seventy-two million, three hundred eighty-six thousand, seven hundred seventy-one".