390576994 has 4 divisors (see below), whose sum is σ = 585865494. Its totient is φ = 195288496.

The previous prime is 390576919. The next prime is 390576997. The reversal of 390576994 is 499675093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 499675093 = 43 ⋅11620351.

It can be written as a sum of positive squares in only one way, i.e., 390260025 + 316969 = 19755^2 + 563^2 .

It is not an unprimeable number, because it can be changed into a prime (390576997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97644247 + ... + 97644250.

Almost surely, 2^390576994 is an apocalyptic number.

390576994 is a deficient number, since it is larger than the sum of its proper divisors (195288500).

390576994 is a wasteful number, since it uses less digits than its factorization.

390576994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195288499.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 390576994 is about 19763.0208723262. The cubic root of 390576994 is about 730.9744876420.

The spelling of 390576994 in words is "three hundred ninety million, five hundred seventy-six thousand, nine hundred ninety-four".