817409012 has 24 divisors (see below), whose sum is σ = 1635478656. Its totient is φ = 350176608.

The previous prime is 817408987. The next prime is 817409053. The reversal of 817409012 is 210904718.

It is a super-2 number, since 2×817409012² = 1336314985797632288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 817409012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94793 + ... + 103055.

It is an arithmetic number, because the mean of its divisors is an integer number (68144944).

Almost surely, 2^817409012 is an apocalyptic number.

It is an amenable number.

817409012 is an abundant number, since it is smaller than the sum of its proper divisors (818069644).

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

817409012 is a wasteful number, since it uses less digits than its factorization.

817409012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11807 (or 11805 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 817409012 is about 28590.3657199414. The cubic root of 817409012 is about 935.0032931910.

The spelling of 817409012 in words is "eight hundred seventeen million, four hundred nine thousand, twelve".