404785340 has 12 divisors (see below), whose sum is σ = 850049256. Its totient is φ = 161914128.

The previous prime is 404785319. The next prime is 404785357. The reversal of 404785340 is 43587404.

It is a self number, because there is not a number n which added to its sum of digits gives 404785340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10119614 + ... + 10119653.

It is an arithmetic number, because the mean of its divisors is an integer number (70837438).

Almost surely, 2^404785340 is an apocalyptic number.

It is an amenable number.

404785340 is an abundant number, since it is smaller than the sum of its proper divisors (445263916).

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

404785340 is a wasteful number, since it uses less digits than its factorization.

404785340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20239276 (or 20239274 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 404785340 is about 20119.2778200412. The cubic root of 404785340 is about 739.7328838689.

The spelling of 404785340 in words is "four hundred four million, seven hundred eighty-five thousand, three hundred forty".