53988399 has 12 divisors (see below), whose sum is σ = 79148056. Its totient is φ = 35454672.

The previous prime is 53988323. The next prime is 53988421. The reversal of 53988399 is 99388935.

It is not a de Polignac number, because 53988399 - 2⁷ = 53988271 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 (53988299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44164 + ... + 45369.

Almost surely, 2^53988399 is an apocalyptic number.

53988399 is a deficient number, since it is larger than the sum of its proper divisors (25159657).

53988399 is a wasteful number, since it uses less digits than its factorization.

53988399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89606 (or 89603 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 53988399 is about 7347.6798378808. The cubic root of 53988399 is about 377.9492457260.

The spelling of 53988399 in words is "fifty-three million, nine hundred eighty-eight thousand, three hundred ninety-nine".