63457989 has 36 divisors (see below), whose sum is σ = 103459104. Its totient is φ = 34431936.

The previous prime is 63457931. The next prime is 63457993. The reversal of 63457989 is 98975436.

It is not a de Polignac number, because 63457989 - 2⁷ = 63457861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63457489) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 463129 + ... + 463265.

It is an arithmetic number, because the mean of its divisors is an integer number (2873864).

Almost surely, 2^63457989 is an apocalyptic number.

63457989 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

63457989 is a deficient number, since it is larger than the sum of its proper divisors (40001115).

63457989 is a wasteful number, since it uses less digits than its factorization.

63457989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 170 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 63457989 is about 7966.0522845384. The cubic root of 63457989 is about 398.8676076608.

It can be divided in two parts, 63457 and 989, that added together give a palindrome (64446).

The spelling of 63457989 in words is "sixty-three million, four hundred fifty-seven thousand, nine hundred eighty-nine".