404658940 has 24 divisors (see below), whose sum is σ = 971181792. Its totient is φ = 138740160.

The previous prime is 404658931. The next prime is 404658959. The reversal of 404658940 is 49856404.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 404658893 and 404658902.

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, 1445071 + ... + 1445350.

It is an arithmetic number, because the mean of its divisors is an integer number (40465908).

Almost surely, 2^404658940 is an apocalyptic number.

It is an amenable number.

404658940 is an abundant number, since it is smaller than the sum of its proper divisors (566522852).

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

404658940 is a wasteful number, since it uses less digits than its factorization.

404658940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890437 (or 2890435 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 404658940 is about 20116.1363089436. The cubic root of 404658940 is about 739.6558784692.

It can be divided in two parts, 404 and 658940, that added together give a square (659344 = 812²).

The spelling of 404658940 in words is "four hundred four million, six hundred fifty-eight thousand, nine hundred forty".