394966920 has 32 divisors (see below), whose sum is σ = 1184901120. Its totient is φ = 105324480.

The previous prime is 394966919. The next prime is 394966931. The reversal of 394966920 is 29669493.

It is a self number, because there is not a number n which added to its sum of digits gives 394966920.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645576 + ... + 1645815.

It is an arithmetic number, because the mean of its divisors is an integer number (37028160).

Almost surely, 2^394966920 is an apocalyptic number.

394966920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394966920 is an abundant number, since it is smaller than the sum of its proper divisors (789934200).

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

394966920 is a wasteful number, since it uses less digits than its factorization.

394966920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291405 (or 3291401 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 394966920 is about 19873.7746792098. The cubic root of 394966920 is about 733.7029092151.

The spelling of 394966920 in words is "three hundred ninety-four million, nine hundred sixty-six thousand, nine hundred twenty".