390872068 has 6 divisors (see below), whose sum is σ = 684026126. Its totient is φ = 195436032.

The previous prime is 390872057. The next prime is 390872077. The reversal of 390872068 is 860278093.

It can be written as a sum of positive squares in only one way, i.e., 332624644 + 58247424 = 18238^2 + 7632^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48859005 + ... + 48859012.

Almost surely, 2^390872068 is an apocalyptic number.

It is an amenable number.

390872068 is a deficient number, since it is larger than the sum of its proper divisors (293154058).

390872068 is a wasteful number, since it uses less digits than its factorization.

390872068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97718021 (or 97718019 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 390872068 is about 19770.4847689681. The cubic root of 390872068 is about 731.1585207307.

The spelling of 390872068 in words is "three hundred ninety million, eight hundred seventy-two thousand, sixty-eight".