812229957 has 64 divisors (see below), whose sum is σ = 1540915200. Its totient is φ = 410495040.

The previous prime is 812229953. The next prime is 812229991. The reversal of 812229957 is 759922218.

It is a happy number.

It is not a de Polignac number, because 812229957 - 2² = 812229953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812229953) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 71644 + ... + 82202.

It is an arithmetic number, because the mean of its divisors is an integer number (24076800).

Almost surely, 2^812229957 is an apocalyptic number.

It is an amenable number.

812229957 is a deficient number, since it is larger than the sum of its proper divisors (728685243).

812229957 is a wasteful number, since it uses less digits than its factorization.

812229957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623 (or 10617 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 812229957 is about 28499.6483662518. The cubic root of 812229957 is about 933.0243994405.

The spelling of 812229957 in words is "eight hundred twelve million, two hundred twenty-nine thousand, nine hundred fifty-seven".