390381900 has 36 divisors (see below), whose sum is σ = 1129505832. Its totient is φ = 104101760.

The previous prime is 390381889. The next prime is 390381949. The reversal of 390381900 is 9183093.

It is a super-2 number, since 2×390381900² = 304796055695220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 650337 + ... + 650936.

It is an arithmetic number, because the mean of its divisors is an integer number (31375162).

Almost surely, 2^390381900 is an apocalyptic number.

390381900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

390381900 is an abundant number, since it is smaller than the sum of its proper divisors (739123932).

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

390381900 is a wasteful number, since it uses less digits than its factorization.

390381900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301290 (or 1301283 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 390381900 is about 19758.0844213198. The cubic root of 390381900 is about 730.8527596260.

The spelling of 390381900 in words is "three hundred ninety million, three hundred eighty-one thousand, nine hundred".