812465447 has 2 divisors, whose sum is σ = 812465448. Its totient is φ = 812465446.

The previous prime is 812465429. The next prime is 812465473. The reversal of 812465447 is 744564218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 812465447 - 2¹⁸ = 812203303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812465747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406232723 + 406232724.

It is an arithmetic number, because the mean of its divisors is an integer number (406232724).

Almost surely, 2^812465447 is an apocalyptic number.

812465447 is a deficient number, since it is larger than the sum of its proper divisors (1).

812465447 is an equidigital number, since it uses as much as digits as its factorization.

812465447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The square root of 812465447 is about 28503.7795213196. The cubic root of 812465447 is about 933.1145613801.

The spelling of 812465447 in words is "eight hundred twelve million, four hundred sixty-five thousand, four hundred forty-seven".