63942879 has 64 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 30222720.

The previous prime is 63942877. The next prime is 63942929. The reversal of 63942879 is 97824936.

It is not a de Polignac number, because 63942879 - 2¹ = 63942877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63942877) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 321222 + ... + 321420.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 2^63942879 is an apocalyptic number.

63942879 is a deficient number, since it is larger than the sum of its proper divisors (52178721).

63942879 is a wasteful number, since it uses less digits than its factorization.

63942879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 653184, while the sum is 48.

The square root of 63942879 is about 7996.4291405602. The cubic root of 63942879 is about 399.8809624954.

The spelling of 63942879 in words is "sixty-three million, nine hundred forty-two thousand, eight hundred seventy-nine".