390494490 has 32 divisors (see below), whose sum is σ = 937707840. Its totient is φ = 104073984.

The previous prime is 390494473. The next prime is 390494497. The reversal of 390494490 is 94494093.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (390494497) 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, 98466 + ... + 102354.

It is an arithmetic number, because the mean of its divisors is an integer number (29303370).

Almost surely, 2^390494490 is an apocalyptic number.

390494490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390494490 is an abundant number, since it is smaller than the sum of its proper divisors (547213350).

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

390494490 is a wasteful number, since it uses less digits than its factorization.

390494490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7246.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 390494490 is about 19760.9334293702. The cubic root of 390494490 is about 730.9230145932.

The spelling of 390494490 in words is "three hundred ninety million, four hundred ninety-four thousand, four hundred ninety".