63489873 has 4 divisors (see below), whose sum is σ = 84653168. Its totient is φ = 42326580.

The previous prime is 63489871. The next prime is 63489889. The reversal of 63489873 is 37898436.

63489873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 63489873 - 2¹ = 63489871 is a prime.

It is a super-2 number, since 2×63489873² = 8061927947112258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63489871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10581643 + ... + 10581648.

It is an arithmetic number, because the mean of its divisors is an integer number (21163292).

Almost surely, 2^63489873 is an apocalyptic number.

It is an amenable number.

63489873 is a deficient number, since it is larger than the sum of its proper divisors (21163295).

63489873 is a wasteful number, since it uses less digits than its factorization.

63489873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21163294.

The product of its digits is 870912, while the sum is 48.

The square root of 63489873 is about 7968.0532754243. The cubic root of 63489873 is about 398.9343991747.

The spelling of 63489873 in words is "sixty-three million, four hundred eighty-nine thousand, eight hundred seventy-three".