394657302940 has 24 divisors (see below), whose sum is σ = 855515187072. Its totient is φ = 152770568640.

The previous prime is 394657302913. The next prime is 394657302967. The reversal of 394657302940 is 49203756493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (394657302913) and next prime (394657302967).

It is a congruent number.

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, 318271399 + ... + 318272638.

It is an arithmetic number, because the mean of its divisors is an integer number (35646466128).

Almost surely, 2^394657302940 is an apocalyptic number.

It is an amenable number.

394657302940 is an abundant number, since it is smaller than the sum of its proper divisors (460857884132).

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

394657302940 is a wasteful number, since it uses less digits than its factorization.

394657302940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636544077 (or 636544075 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 394657302940 in words is "three hundred ninety-four billion, six hundred fifty-seven million, three hundred two thousand, nine hundred forty".