456593981 has 4 divisors (see below), whose sum is σ = 456647964. Its totient is φ = 456540000.

The previous prime is 456593957. The next prime is 456593983. The reversal of 456593981 is 189395654.

456593981 = 15109² + 15110².

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 228281881 + 228312100 = 15109^2 + 15110^2 .

It is a cyclic number.

It is not a de Polignac number, because 456593981 - 2²² = 452399677 is a prime.

It is a super-2 number, since 2×456593981² = 416956126970856722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456593983) 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, 11240 + ... + 32241.

It is an arithmetic number, because the mean of its divisors is an integer number (114161991).

Almost surely, 2^456593981 is an apocalyptic number.

456593981 is the 15110-th centered square number.

It is an amenable number.

456593981 is a deficient number, since it is larger than the sum of its proper divisors (53983).

456593981 is a wasteful number, since it uses less digits than its factorization.

456593981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53982.

The product of its digits is 1166400, while the sum is 50.

The square root of 456593981 is about 21368.0598323760. The cubic root of 456593981 is about 770.0342825013.

The spelling of 456593981 in words is "four hundred fifty-six million, five hundred ninety-three thousand, nine hundred eighty-one".