809374636 has 12 divisors (see below), whose sum is σ = 1618749328. Its totient is φ = 346874832.

The previous prime is 809374609. The next prime is 809374637. The reversal of 809374636 is 636473908.

809374636 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (809374637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14453091 + ... + 14453146.

Almost surely, 2^809374636 is an apocalyptic number.

It is an amenable number.

809374636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

809374636 is a wasteful number, since it uses less digits than its factorization.

809374636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28906248 (or 28906246 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 809374636 is about 28449.5102945552. The cubic root of 809374636 is about 931.9297947940.

The spelling of 809374636 in words is "eight hundred nine million, three hundred seventy-four thousand, six hundred thirty-six".