457961989 has 2 divisors, whose sum is σ = 457961990. Its totient is φ = 457961988.

The previous prime is 457961981. The next prime is 457962007. The reversal of 457961989 is 989169754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393030625 + 64931364 = 19825^2 + 8058^2 .

It is a cyclic number.

It is not a de Polignac number, because 457961989 - 2³ = 457961981 is a prime.

It is a super-2 number, since 2×457961989² = 419458366737672242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457961981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228980994 + 228980995.

It is an arithmetic number, because the mean of its divisors is an integer number (228980995).

Almost surely, 2^457961989 is an apocalyptic number.

It is an amenable number.

457961989 is a deficient number, since it is larger than the sum of its proper divisors (1).

457961989 is an equidigital number, since it uses as much as digits as its factorization.

457961989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 457961989 is about 21400.0464719122. The cubic root of 457961989 is about 770.8025527818.

The spelling of 457961989 in words is "four hundred fifty-seven million, nine hundred sixty-one thousand, nine hundred eighty-nine".