53929979 has 8 divisors (see below), whose sum is σ = 55640208. Its totient is φ = 52233120.

The previous prime is 53929973. The next prime is 53930011. The reversal of 53929979 is 97992935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53929979 - 2⁸ = 53929723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53929979.

It is not an unprimeable number, because it can be changed into a prime (53929973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5189 + ... + 11609.

It is an arithmetic number, because the mean of its divisors is an integer number (6955026).

Almost surely, 2^53929979 is an apocalyptic number.

53929979 is a deficient number, since it is larger than the sum of its proper divisors (1710229).

53929979 is a wasteful number, since it uses less digits than its factorization.

53929979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685.

The product of its digits is 1377810, while the sum is 53.

The square root of 53929979 is about 7343.7033572987. The cubic root of 53929979 is about 377.8128722075.

The spelling of 53929979 in words is "fifty-three million, nine hundred twenty-nine thousand, nine hundred seventy-nine".