464644457 has 2 divisors, whose sum is σ = 464644458. Its totient is φ = 464644456.

The previous prime is 464644421. The next prime is 464644469. The reversal of 464644457 is 754446464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236513641 + 228130816 = 15379^2 + 15104^2 .

It is a cyclic number.

It is not a de Polignac number, because 464644457 - 2⁶ = 464644393 is a prime.

It is not a weakly prime, because it can be changed into another prime (464644657) 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, 232322228 + 232322229.

It is an arithmetic number, because the mean of its divisors is an integer number (232322229).

Almost surely, 2^464644457 is an apocalyptic number.

It is an amenable number.

464644457 is a deficient number, since it is larger than the sum of its proper divisors (1).

464644457 is an equidigital number, since it uses as much as digits as its factorization.

464644457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 44.

The square root of 464644457 is about 21555.6131204844. The cubic root of 464644457 is about 774.5335838010.

The spelling of 464644457 in words is "four hundred sixty-four million, six hundred forty-four thousand, four hundred fifty-seven".