53993489 has 16 divisors (see below), whose sum is σ = 62100864. Its totient is φ = 46464000.

The previous prime is 53993483. The next prime is 53993503. The reversal of 53993489 is 98439935.

It is not a de Polignac number, because 53993489 - 2²⁴ = 37216273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53993483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24497 + ... + 26609.

It is an arithmetic number, because the mean of its divisors is an integer number (3881304).

Almost surely, 2^53993489 is an apocalyptic number.

It is an amenable number.

53993489 is a deficient number, since it is larger than the sum of its proper divisors (8107375).

53993489 is a wasteful number, since it uses less digits than its factorization.

53993489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248.

The product of its digits is 1049760, while the sum is 50.

The square root of 53993489 is about 7348.0261975581. The cubic root of 53993489 is about 377.9611229765.

It can be divided in two parts, 5399 and 3489, that added together give a palindrome (8888).

The spelling of 53993489 in words is "fifty-three million, nine hundred ninety-three thousand, four hundred eighty-nine".