53809679 has 8 divisors (see below), whose sum is σ = 67087488. Its totient is φ = 41929560.

The previous prime is 53809663. The next prime is 53809697. The reversal of 53809679 is 97690835.

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 53809679 - 2⁴ = 53809663 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 (53809619) 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, 349337 + ... + 349490.

It is an arithmetic number, because the mean of its divisors is an integer number (8385936).

Almost surely, 2^53809679 is an apocalyptic number.

53809679 is a deficient number, since it is larger than the sum of its proper divisors (13277809).

53809679 is a wasteful number, since it uses less digits than its factorization.

53809679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698845.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 53809679 is about 7335.5080941950. The cubic root of 53809679 is about 377.5317377524.

The spelling of 53809679 in words is "fifty-three million, eight hundred nine thousand, six hundred seventy-nine".