812490907 has 2 divisors, whose sum is σ = 812490908. Its totient is φ = 812490906.

The previous prime is 812490871. The next prime is 812490919. The reversal of 812490907 is 709094218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812490907 - 2⁷ = 812490779 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 812490907.

It is not a weakly prime, because it can be changed into another prime (812490937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406245453 + 406245454.

It is an arithmetic number, because the mean of its divisors is an integer number (406245454).

Almost surely, 2^812490907 is an apocalyptic number.

812490907 is a deficient number, since it is larger than the sum of its proper divisors (1).

812490907 is an equidigital number, since it uses as much as digits as its factorization.

812490907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 812490907 is about 28504.2261252608. The cubic root of 812490907 is about 933.1243081940.

The spelling of 812490907 in words is "eight hundred twelve million, four hundred ninety thousand, nine hundred seven".