862886381 has 4 divisors (see below), whose sum is σ = 986155872. Its totient is φ = 739616892.

The previous prime is 862886371. The next prime is 862886393. The reversal of 862886381 is 183688268.

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 862886381 - 2¹⁰ = 862885357 is a prime.

It is a super-2 number, since 2×862886381² = 1489145813030554322, 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 (862886371) 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, 61634735 + ... + 61634748.

It is an arithmetic number, because the mean of its divisors is an integer number (246538968).

Almost surely, 2^862886381 is an apocalyptic number.

It is an amenable number.

862886381 is a deficient number, since it is larger than the sum of its proper divisors (123269491).

862886381 is a wasteful number, since it uses less digits than its factorization.

862886381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123269490.

The product of its digits is 884736, while the sum is 50.

The square root of 862886381 is about 29374.9277616133. The cubic root of 862886381 is about 952.0312515486.

The spelling of 862886381 in words is "eight hundred sixty-two million, eight hundred eighty-six thousand, three hundred eighty-one".