63879893 has 24 divisors (see below), whose sum is σ = 81817344. Its totient is φ = 48803040.

The previous prime is 63879887. The next prime is 63879943. The reversal of 63879893 is 39897836.

It is not a de Polignac number, because 63879893 - 2¹² = 63875797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63879853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44180 + ... + 45602.

It is an arithmetic number, because the mean of its divisors is an integer number (3409056).

Almost surely, 2^63879893 is an apocalyptic number.

It is an amenable number.

63879893 is a deficient number, since it is larger than the sum of its proper divisors (17937451).

63879893 is a wasteful number, since it uses less digits than its factorization.

63879893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1494 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 63879893 is about 7992.4897872941. The cubic root of 63879893 is about 399.7496203912.

The spelling of 63879893 in words is "sixty-three million, eight hundred seventy-nine thousand, eight hundred ninety-three".