394998960 has 40 divisors (see below), whose sum is σ = 1224497520. Its totient is φ = 105332992.

The previous prime is 394998959. The next prime is 394998971. The reversal of 394998960 is 69899493.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 394998960.

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, 822675 + ... + 823154.

It is an arithmetic number, because the mean of its divisors is an integer number (30612438).

Almost surely, 2^394998960 is an apocalyptic number.

394998960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394998960 is an abundant number, since it is smaller than the sum of its proper divisors (829498560).

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

394998960 is a wasteful number, since it uses less digits than its factorization.

394998960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645845 (or 1645839 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 57.

The square root of 394998960 is about 19874.5807502951. The cubic root of 394998960 is about 733.7227481808.

The spelling of 394998960 in words is "three hundred ninety-four million, nine hundred ninety-eight thousand, nine hundred sixty".