457936981 has 4 divisors (see below), whose sum is σ = 461542912. Its totient is φ = 454331052.

The previous prime is 457936961. The next prime is 457936987. The reversal of 457936981 is 189639754.

It is a happy number.

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 not a de Polignac number, because 457936981 - 2¹³ = 457928789 is a prime.

It is a super-2 number, since 2×457936981² = 419412557134788722, 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 (457936987) 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, 1802775 + ... + 1803028.

It is an arithmetic number, because the mean of its divisors is an integer number (115385728).

Almost surely, 2^457936981 is an apocalyptic number.

It is an amenable number.

457936981 is a deficient number, since it is larger than the sum of its proper divisors (3605931).

457936981 is a wasteful number, since it uses less digits than its factorization.

457936981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605930.

The product of its digits is 1632960, while the sum is 52.

The square root of 457936981 is about 21399.4621661387. The cubic root of 457936981 is about 770.7885220823.

The spelling of 457936981 in words is "four hundred fifty-seven million, nine hundred thirty-six thousand, nine hundred eighty-one".