63788979 has 16 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 41030880.

The previous prime is 63788957. The next prime is 63788983. The reversal of 63788979 is 97988736.

It is not a de Polignac number, because 63788979 - 2⁹ = 63788467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63780979) 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 15 ways as a sum of consecutive naturals, for example, 38149 + ... + 39785.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^63788979 is an apocalyptic number.

63788979 is a deficient number, since it is larger than the sum of its proper divisors (24269901).

63788979 is a wasteful number, since it uses less digits than its factorization.

63788979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its digits is 4572288, while the sum is 57.

The square root of 63788979 is about 7986.8002979917. The cubic root of 63788979 is about 399.5598888497.

The spelling of 63788979 in words is "sixty-three million, seven hundred eighty-eight thousand, nine hundred seventy-nine".