404364540 has 24 divisors (see below), whose sum is σ = 1132220880. Its totient is φ = 107830528.

The previous prime is 404364539. The next prime is 404364551. The reversal of 404364540 is 45463404.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 404364498 and 404364507.

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, 3369645 + ... + 3369764.

It is an arithmetic number, because the mean of its divisors is an integer number (47175870).

Almost surely, 2^404364540 is an apocalyptic number.

It is an amenable number.

404364540 is an abundant number, since it is smaller than the sum of its proper divisors (727856340).

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

404364540 is a wasteful number, since it uses less digits than its factorization.

404364540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739421 (or 6739419 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 404364540 is about 20108.8174689612. The cubic root of 404364540 is about 739.4764619302.

The spelling of 404364540 in words is "four hundred four million, three hundred sixty-four thousand, five hundred forty".