809479216 has 60 divisors (see below), whose sum is σ = 1964790912. Its totient is φ = 320229504.

The previous prime is 809479213. The next prime is 809479217. The reversal of 809479216 is 612974908.

It is a super-2 number, since 2×809479216² = 1310513202271949312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (809479213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29520 + ... + 49903.

Almost surely, 2^809479216 is an apocalyptic number.

It is an amenable number.

809479216 is an abundant number, since it is smaller than the sum of its proper divisors (1155311696).

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

809479216 is a wasteful number, since it uses less digits than its factorization.

809479216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79458 (or 79445 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 809479216 is about 28451.3482281596. The cubic root of 809479216 is about 931.9699315516.

The spelling of 809479216 in words is "eight hundred nine million, four hundred seventy-nine thousand, two hundred sixteen".