809932830 has 32 divisors (see below), whose sum is σ = 2221530624. Its totient is φ = 185127456.

The previous prime is 809932813. The next prime is 809932843. The reversal of 809932830 is 38239908.

It is a super-2 number, since 2×809932830² = 1311982378223617800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1928202 + ... + 1928621.

It is an arithmetic number, because the mean of its divisors is an integer number (69422832).

Almost surely, 2^809932830 is an apocalyptic number.

809932830 is an abundant number, since it is smaller than the sum of its proper divisors (1411597794).

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

809932830 is a wasteful number, since it uses less digits than its factorization.

809932830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856840.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 809932830 is about 28459.3188604366. The cubic root of 809932830 is about 932.1439840606.

The spelling of 809932830 in words is "eight hundred nine million, nine hundred thirty-two thousand, eight hundred thirty".