394575279020 has 24 divisors (see below), whose sum is σ = 892347170064. Its totient is φ = 145689333696.

The previous prime is 394575279019. The next prime is 394575279029. The reversal of 394575279020 is 20972575493.

It is not an unprimeable number, because it can be changed into a prime (394575279029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758798354 + ... + 758798873.

It is an arithmetic number, because the mean of its divisors is an integer number (37181132086).

Almost surely, 2^394575279020 is an apocalyptic number.

It is an amenable number.

394575279020 is an abundant number, since it is smaller than the sum of its proper divisors (497771891044).

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

394575279020 is a wasteful number, since it uses less digits than its factorization.

394575279020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517597249 (or 1517597247 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 394575279020 in words is "three hundred ninety-four billion, five hundred seventy-five million, two hundred seventy-nine thousand, twenty".