390799450 has 12 divisors (see below), whose sum is σ = 726887070. Its totient is φ = 156319760.

The previous prime is 390799433. The next prime is 390799457. The reversal of 390799450 is 54997093.

It can be written as a sum of positive squares in 3 ways, for example, as 238795209 + 152004241 = 15453^2 + 12329^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 390799450.

It is not an unprimeable number, because it can be changed into a prime (390799457) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3907945 + ... + 3908044.

Almost surely, 2^390799450 is an apocalyptic number.

390799450 is a deficient number, since it is larger than the sum of its proper divisors (336087620).

390799450 is a wasteful number, since it uses less digits than its factorization.

390799450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7816001 (or 7815996 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 390799450 is about 19768.6481581316. The cubic root of 390799450 is about 731.1132386020.

The spelling of 390799450 in words is "three hundred ninety million, seven hundred ninety-nine thousand, four hundred fifty".