390505376 has 24 divisors (see below), whose sum is σ = 772208640. Its totient is φ = 194388928.

The previous prime is 390505343. The next prime is 390505391. The reversal of 390505376 is 673505093.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19616 + ... + 34143.

It is an arithmetic number, because the mean of its divisors is an integer number (32175360).

Almost surely, 2^390505376 is an apocalyptic number.

It is an amenable number.

390505376 is a deficient number, since it is larger than the sum of its proper divisors (381703264).

390505376 is a wasteful number, since it uses less digits than its factorization.

390505376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53996 (or 53988 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 390505376 is about 19761.2088699047. The cubic root of 390505376 is about 730.9298066259.

The spelling of 390505376 in words is "three hundred ninety million, five hundred five thousand, three hundred seventy-six".