408912380 has 12 divisors (see below), whose sum is σ = 858716040. Its totient is φ = 163564944.

The previous prime is 408912367. The next prime is 408912391. The reversal of 408912380 is 83219804.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 408912380.

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, 10222790 + ... + 10222829.

It is an arithmetic number, because the mean of its divisors is an integer number (71559670).

Almost surely, 2^408912380 is an apocalyptic number.

It is an amenable number.

408912380 is an abundant number, since it is smaller than the sum of its proper divisors (449803660).

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

408912380 is a wasteful number, since it uses less digits than its factorization.

408912380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20445628 (or 20445626 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 408912380 is about 20221.5820350436. The cubic root of 408912380 is about 742.2384012706.

The spelling of 408912380 in words is "four hundred eight million, nine hundred twelve thousand, three hundred eighty".