394252940 has 24 divisors (see below), whose sum is σ = 829870272. Its totient is φ = 157331840.

The previous prime is 394252879. The next prime is 394252973. The reversal of 394252940 is 49252493.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 394252894 and 394252903.

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, 14249 + ... + 31488.

It is an arithmetic number, because the mean of its divisors is an integer number (34577928).

Almost surely, 2^394252940 is an apocalyptic number.

It is an amenable number.

394252940 is an abundant number, since it is smaller than the sum of its proper divisors (435617332).

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

394252940 is a wasteful number, since it uses less digits than its factorization.

394252940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46177 (or 46175 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 394252940 is about 19855.8036855726. The cubic root of 394252940 is about 733.2605386879.

The spelling of 394252940 in words is "three hundred ninety-four million, two hundred fifty-two thousand, nine hundred forty".