404513340 has 96 divisors (see below), whose sum is σ = 1412135424. Its totient is φ = 84053760.

The previous prime is 404513321. The next prime is 404513353. The reversal of 404513340 is 43315404.

It is a self number, because there is not a number n which added to its sum of digits gives 404513340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39159 + ... + 48398.

It is an arithmetic number, because the mean of its divisors is an integer number (14709744).

Almost surely, 2^404513340 is an apocalyptic number.

It is an amenable number.

404513340 is an abundant number, since it is smaller than the sum of its proper divisors (1007622084).

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

404513340 is a wasteful number, since it uses less digits than its factorization.

404513340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87587 (or 87585 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 404513340 is about 20112.5169981283. The cubic root of 404513340 is about 739.5671561698.

Adding to 404513340 its reverse (43315404), we get a palindrome (447828744).

The spelling of 404513340 in words is "four hundred four million, five hundred thirteen thousand, three hundred forty".