916855478 has 24 divisors (see below), whose sum is σ = 1727631696. Its totient is φ = 357215760.

The previous prime is 916855421. The next prime is 916855487. The reversal of 916855478 is 874558619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268925 + ... + 272312.

It is an arithmetic number, because the mean of its divisors is an integer number (71984654).

Almost surely, 2^916855478 is an apocalyptic number.

916855478 is a deficient number, since it is larger than the sum of its proper divisors (810776218).

916855478 is a wasteful number, since it uses less digits than its factorization.

916855478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541268 (or 541257 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 53.

The square root of 916855478 is about 30279.6214969738. The cubic root of 916855478 is about 971.4794718695.

It can be divided in two parts, 9168 and 55478, that added together give a palindrome (64646).

The spelling of 916855478 in words is "nine hundred sixteen million, eight hundred fifty-five thousand, four hundred seventy-eight".