394197036 has 12 divisors (see below), whose sum is σ = 919793112. Its totient is φ = 131399008.

The previous prime is 394197031. The next prime is 394197049. The reversal of 394197036 is 630791493.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (394197031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16424865 + ... + 16424888.

It is an arithmetic number, because the mean of its divisors is an integer number (76649426).

Almost surely, 2^394197036 is an apocalyptic number.

It is an amenable number.

394197036 is an abundant number, since it is smaller than the sum of its proper divisors (525596076).

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

394197036 is a wasteful number, since it uses less digits than its factorization.

394197036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32849760 (or 32849758 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 394197036 is about 19854.3958860500. The cubic root of 394197036 is about 733.2258789296.

The spelling of 394197036 in words is "three hundred ninety-four million, one hundred ninety-seven thousand, thirty-six".