864789942 has 32 divisors (see below), whose sum is σ = 1807483392. Its totient is φ = 275565024.

The previous prime is 864789931. The next prime is 864789967. The reversal of 864789942 is 249987468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23533 + ... + 47784.

It is an arithmetic number, because the mean of its divisors is an integer number (56483856).

Almost surely, 2^864789942 is an apocalyptic number.

864789942 is an abundant number, since it is smaller than the sum of its proper divisors (942693450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864789942 is a wasteful number, since it uses less digits than its factorization.

864789942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71412.

The product of its digits is 6967296, while the sum is 57.

The square root of 864789942 is about 29407.3110297422. The cubic root of 864789942 is about 952.7308100695.

It can be divided in two parts, 8647 and 89942, that added together give a palindrome (98589).

The spelling of 864789942 in words is "eight hundred sixty-four million, seven hundred eighty-nine thousand, nine hundred forty-two".