457985861 has 4 divisors (see below), whose sum is σ = 482090400. Its totient is φ = 433881324.

The previous prime is 457985851. The next prime is 457985881. The reversal of 457985861 is 168589754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-457985861 is a prime.

It is a super-2 number, since 2×457985861² = 419502097751822642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457985851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12052241 + ... + 12052278.

It is an arithmetic number, because the mean of its divisors is an integer number (120522600).

Almost surely, 2^457985861 is an apocalyptic number.

It is an amenable number.

457985861 is a deficient number, since it is larger than the sum of its proper divisors (24104539).

457985861 is a wasteful number, since it uses less digits than its factorization.

457985861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24104538.

The product of its digits is 2419200, while the sum is 53.

The square root of 457985861 is about 21400.6042204420. The cubic root of 457985861 is about 770.8159456537.

The spelling of 457985861 in words is "four hundred fifty-seven million, nine hundred eighty-five thousand, eight hundred sixty-one".