812975413 has 2 divisors, whose sum is σ = 812975414. Its totient is φ = 812975412.

The previous prime is 812975381. The next prime is 812975417. The reversal of 812975413 is 314579218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808947364 + 4028049 = 28442^2 + 2007^2 .

It is a cyclic number.

It is not a de Polignac number, because 812975413 - 2⁵ = 812975381 is a prime.

It is a super-3 number, since 3×812975413³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812975417) 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 as a sum of consecutive naturals, namely, 406487706 + 406487707.

It is an arithmetic number, because the mean of its divisors is an integer number (406487707).

Almost surely, 2^812975413 is an apocalyptic number.

It is an amenable number.

812975413 is a deficient number, since it is larger than the sum of its proper divisors (1).

812975413 is an equidigital number, since it uses as much as digits as its factorization.

812975413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 812975413 is about 28512.7237036380. The cubic root of 812975413 is about 933.3097521111.

The spelling of 812975413 in words is "eight hundred twelve million, nine hundred seventy-five thousand, four hundred thirteen".