390542866 has 32 divisors (see below), whose sum is σ = 682012800. Its totient is φ = 164267136.

The previous prime is 390542851. The next prime is 390542869. The reversal of 390542866 is 668245093.

It is not an unprimeable number, because it can be changed into a prime (390542869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326766 + ... + 327958.

It is an arithmetic number, because the mean of its divisors is an integer number (21312900).

Almost surely, 2^390542866 is an apocalyptic number.

390542866 is a deficient number, since it is larger than the sum of its proper divisors (291469934).

390542866 is a wasteful number, since it uses less digits than its factorization.

390542866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 390542866 is about 19762.1574227107. The cubic root of 390542866 is about 730.9531965570.

The spelling of 390542866 in words is "three hundred ninety million, five hundred forty-two thousand, eight hundred sixty-six".