865488942 has 32 divisors (see below), whose sum is σ = 2006933760. Its totient is φ = 275952600.

The previous prime is 865488937. The next prime is 865488959. The reversal of 865488942 is 249884568.

865488942 is a `hidden beast` number, since 8 + 6 + 548 + 8 + 94 + 2 = 666.

It is a super-2 number, since 2×865488942² = 1498142217448558728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347184 + ... + 349667.

It is an arithmetic number, because the mean of its divisors is an integer number (62716680).

Almost surely, 2^865488942 is an apocalyptic number.

865488942 is an abundant number, since it is smaller than the sum of its proper divisors (1141444818).

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

865488942 is a wasteful number, since it uses less digits than its factorization.

865488942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696885 (or 696879 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 865488942 is about 29419.1934287805. The cubic root of 865488942 is about 952.9874348117.

The spelling of 865488942 in words is "eight hundred sixty-five million, four hundred eighty-eight thousand, nine hundred forty-two".