390516074 has 12 divisors (see below), whose sum is σ = 634300326. Its totient is φ = 180238032.

The previous prime is 390516073. The next prime is 390516107. The reversal of 390516074 is 470615093.

It can be written as a sum of positive squares in 3 ways, for example, as 226291849 + 164224225 = 15043^2 + 12815^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (390516073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577349 + ... + 578024.

Almost surely, 2^390516074 is an apocalyptic number.

390516074 is a deficient number, since it is larger than the sum of its proper divisors (243784252).

390516074 is a wasteful number, since it uses less digits than its factorization.

390516074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155401 (or 1155388 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 390516074 is about 19761.4795498718. The cubic root of 390516074 is about 730.9364812379.

The spelling of 390516074 in words is "three hundred ninety million, five hundred sixteen thousand, seventy-four".