814427972 has 12 divisors (see below), whose sum is σ = 1426770156. Its totient is φ = 406779360.

The previous prime is 814427903. The next prime is 814427981. The reversal of 814427972 is 279724418.

It can be written as a sum of positive squares in 2 ways, for example, as 219750976 + 594676996 = 14824^2 + 24386^2 .

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 3 ways as a sum of consecutive naturals, for example, 104423 + ... + 111950.

It is an arithmetic number, because the mean of its divisors is an integer number (118897513).

Almost surely, 2^814427972 is an apocalyptic number.

It is an amenable number.

814427972 is a deficient number, since it is larger than the sum of its proper divisors (612342184).

814427972 is a wasteful number, since it uses less digits than its factorization.

814427972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217318 (or 217316 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 814427972 is about 28538.1844552172. The cubic root of 814427972 is about 933.8652756231.

The spelling of 814427972 in words is "eight hundred fourteen million, four hundred twenty-seven thousand, nine hundred seventy-two".