394166424 has 32 divisors (see below), whose sum is σ = 992946240. Its totient is φ = 130384800.

The previous prime is 394166417. The next prime is 394166429. The reversal of 394166424 is 424661493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394166429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59542 + ... + 65829.

It is an arithmetic number, because the mean of its divisors is an integer number (31029570).

Almost surely, 2^394166424 is an apocalyptic number.

It is an amenable number.

394166424 is an abundant number, since it is smaller than the sum of its proper divisors (598779816).

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

394166424 is a wasteful number, since it uses less digits than its factorization.

394166424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125511 (or 125507 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 394166424 is about 19853.6249586820. The cubic root of 394166424 is about 733.2068984963.

The spelling of 394166424 in words is "three hundred ninety-four million, one hundred sixty-six thousand, four hundred twenty-four".