63489144 has 32 divisors (see below), whose sum is σ = 159160320. Its totient is φ = 21104736.

The previous prime is 63489143. The next prime is 63489157. The reversal of 63489144 is 44198436.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63489143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5739 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (4973760).

Almost surely, 2^63489144 is an apocalyptic number.

It is an amenable number.

63489144 is an abundant number, since it is smaller than the sum of its proper divisors (95671176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63489144 is a wasteful number, since it uses less digits than its factorization.

63489144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7299 (or 7295 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 63489144 is about 7968.0075301169. The cubic root of 63489144 is about 398.9328722945.

The spelling of 63489144 in words is "sixty-three million, four hundred eighty-nine thousand, one hundred forty-four".