390454650 has 36 divisors (see below), whose sum is σ = 1049022702. Its totient is φ = 104121120.

The previous prime is 390454639. The next prime is 390454651. The reversal of 390454650 is 56454093.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 366454449 + 24000201 = 19143^2 + 4899^2 .

It is not an unprimeable number, because it can be changed into a prime (390454651) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 433389 + ... + 434288.

Almost surely, 2^390454650 is an apocalyptic number.

390454650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390454650 is an abundant number, since it is smaller than the sum of its proper divisors (658568052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390454650 is a wasteful number, since it uses less digits than its factorization.

390454650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867695 (or 867687 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 390454650 is about 19759.9253541100. The cubic root of 390454650 is about 730.8981563993.

The spelling of 390454650 in words is "three hundred ninety million, four hundred fifty-four thousand, six hundred fifty".