860944431 has 16 divisors (see below), whose sum is σ = 1225820160. Its totient is φ = 536292960.

The previous prime is 860944393. The next prime is 860944433. The reversal of 860944431 is 134449068.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-860944431 is a prime.

It is a super-2 number, since 2×860944431² = 1482450626539827522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 860944431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860944433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156915 + ... + 162308.

It is an arithmetic number, because the mean of its divisors is an integer number (76613760).

Almost surely, 2^860944431 is an apocalyptic number.

860944431 is a deficient number, since it is larger than the sum of its proper divisors (364875729).

860944431 is a wasteful number, since it uses less digits than its factorization.

860944431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319286.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 860944431 is about 29341.8545937369. The cubic root of 860944431 is about 951.3165240984.

It can be divided in two parts, 86094 and 4431, that added together give a triangular number (90525 = T₄₂₅).

The spelling of 860944431 in words is "eight hundred sixty million, nine hundred forty-four thousand, four hundred thirty-one".