939955816 has 8 divisors (see below), whose sum is σ = 1762417170. Its totient is φ = 469977904.

The previous prime is 939955781. The next prime is 939955843. The reversal of 939955816 is 618559939.

It can be written as a sum of positive squares in only one way, i.e., 748022500 + 191933316 = 27350^2 + 13854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58747231 + ... + 58747246.

Almost surely, 2^939955816 is an apocalyptic number.

It is an amenable number.

939955816 is a deficient number, since it is larger than the sum of its proper divisors (822461354).

939955816 is a wasteful number, since it uses less digits than its factorization.

939955816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117494483 (or 117494479 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 55.

The square root of 939955816 is about 30658.6988634547. The cubic root of 939955816 is about 979.5707602366.

The spelling of 939955816 in words is "nine hundred thirty-nine million, nine hundred fifty-five thousand, eight hundred sixteen".