53389979 has 8 divisors (see below), whose sum is σ = 57734208. Its totient is φ = 49179520.

The previous prime is 53389907. The next prime is 53389993. The reversal of 53389979 is 97998335.

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 53389979 - 2⁸ = 53389723 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 53389979.

It is not an unprimeable number, because it can be changed into a prime (53389079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32612 + ... + 34209.

It is an arithmetic number, because the mean of its divisors is an integer number (7216776).

Almost surely, 2^53389979 is an apocalyptic number.

53389979 is a deficient number, since it is larger than the sum of its proper divisors (4344229).

53389979 is a wasteful number, since it uses less digits than its factorization.

53389979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66885.

The product of its digits is 1837080, while the sum is 53.

The square root of 53389979 is about 7306.8446678440. The cubic root of 53389979 is about 376.5476284331.

The spelling of 53389979 in words is "fifty-three million, three hundred eighty-nine thousand, nine hundred seventy-nine".