53931389 has 8 divisors (see below), whose sum is σ = 56548032. Its totient is φ = 51337440.

The previous prime is 53931337. The next prime is 53931391. The reversal of 53931389 is 98313935.

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 53931389 - 2¹⁶ = 53865853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53901389) 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, 704 + ... + 10409.

It is an arithmetic number, because the mean of its divisors is an integer number (7068504).

Almost surely, 2^53931389 is an apocalyptic number.

It is an amenable number.

53931389 is a deficient number, since it is larger than the sum of its proper divisors (2616643).

53931389 is a wasteful number, since it uses less digits than its factorization.

53931389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11347.

The product of its digits is 87480, while the sum is 41.

The square root of 53931389 is about 7343.7993572809. The cubic root of 53931389 is about 377.8161648196.

The spelling of 53931389 in words is "fifty-three million, nine hundred thirty-one thousand, three hundred eighty-nine".