809612122 has 16 divisors (see below), whose sum is σ = 1326942144. Its totient is φ = 367416000.

The previous prime is 809612113. The next prime is 809612143. The reversal of 809612122 is 221216908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15279 + ... + 43042.

It is an arithmetic number, because the mean of its divisors is an integer number (82933884).

Almost surely, 2^809612122 is an apocalyptic number.

809612122 is a deficient number, since it is larger than the sum of its proper divisors (517330022).

809612122 is a wasteful number, since it uses less digits than its factorization.

809612122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58965.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 809612122 is about 28453.6838036835. The cubic root of 809612122 is about 932.0209345565.

The spelling of 809612122 in words is "eight hundred nine million, six hundred twelve thousand, one hundred twenty-two".