457949864 has 8 divisors (see below), whose sum is σ = 858656010. Its totient is φ = 228974928.

The previous prime is 457949827. The next prime is 457949867. The reversal of 457949864 is 468949754.

It can be written as a sum of positive squares in only one way, i.e., 454116100 + 3833764 = 21310^2 + 1958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (457949867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28621859 + ... + 28621874.

Almost surely, 2^457949864 is an apocalyptic number.

It is an amenable number.

457949864 is a deficient number, since it is larger than the sum of its proper divisors (400706146).

457949864 is a wasteful number, since it uses less digits than its factorization.

457949864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57243739 (or 57243735 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 457949864 is about 21399.7631762597. The cubic root of 457949864 is about 770.7957501332.

The spelling of 457949864 in words is "four hundred fifty-seven million, nine hundred forty-nine thousand, eight hundred sixty-four".