812422406 has 16 divisors (see below), whose sum is σ = 1283342400. Its totient is φ = 384660648.

The previous prime is 812422397. The next prime is 812422417. The reversal of 812422406 is 604224218.

It is a Curzon number.

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, 136121 + ... + 141963.

It is an arithmetic number, because the mean of its divisors is an integer number (80208900).

Almost surely, 2^812422406 is an apocalyptic number.

812422406 is a deficient number, since it is larger than the sum of its proper divisors (470919994).

812422406 is a wasteful number, since it uses less digits than its factorization.

812422406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 812422406 is about 28503.0245061818. The cubic root of 812422406 is about 933.0980835950.

The spelling of 812422406 in words is "eight hundred twelve million, four hundred twenty-two thousand, four hundred six".