456805991 has 2 divisors, whose sum is σ = 456805992. Its totient is φ = 456805990.

The previous prime is 456805903. The next prime is 456806011. The reversal of 456805991 is 199508654.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 456805991 - 2¹⁴ = 456789607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456805091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228402995 + 228402996.

It is an arithmetic number, because the mean of its divisors is an integer number (228402996).

Almost surely, 2^456805991 is an apocalyptic number.

456805991 is a deficient number, since it is larger than the sum of its proper divisors (1).

456805991 is an equidigital number, since it uses as much as digits as its factorization.

456805991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 456805991 is about 21373.0201656200. The cubic root of 456805991 is about 770.1534472396.

The spelling of 456805991 in words is "four hundred fifty-six million, eight hundred five thousand, nine hundred ninety-one".