409078812 has 24 divisors (see below), whose sum is σ = 977799312. Its totient is φ = 133033600.

The previous prime is 409078763. The next prime is 409078819. The reversal of 409078812 is 218870904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409078819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415239 + ... + 416222.

It is an arithmetic number, because the mean of its divisors is an integer number (40741638).

Almost surely, 2^409078812 is an apocalyptic number.

It is an amenable number.

409078812 is an abundant number, since it is smaller than the sum of its proper divisors (568720500).

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

409078812 is a wasteful number, since it uses less digits than its factorization.

409078812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831509 (or 831507 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 409078812 is about 20225.6968235955. The cubic root of 409078812 is about 742.3390874418.

The spelling of 409078812 in words is "four hundred nine million, seventy-eight thousand, eight hundred twelve".