63928079 has 4 divisors (see below), whose sum is σ = 64214976. Its totient is φ = 63641184.

The previous prime is 63928069. The next prime is 63928121. The reversal of 63928079 is 97082936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63928079 - 2²⁰ = 62879503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63928009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143114 + ... + 143559.

It is an arithmetic number, because the mean of its divisors is an integer number (16053744).

Almost surely, 2^63928079 is an apocalyptic number.

63928079 is a deficient number, since it is larger than the sum of its proper divisors (286897).

63928079 is a wasteful number, since it uses less digits than its factorization.

63928079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286896.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 63928079 is about 7995.5036739407. The cubic root of 63928079 is about 399.8501084216.

The spelling of 63928079 in words is "sixty-three million, nine hundred twenty-eight thousand, seventy-nine".