53879989 has 4 divisors (see below), whose sum is σ = 55133056. Its totient is φ = 52626924.

The previous prime is 53879981. The next prime is 53880011. The reversal of 53879989 is 98997835.

53879989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53879989 - 2³ = 53879981 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 (53879981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626469 + ... + 626554.

It is an arithmetic number, because the mean of its divisors is an integer number (13783264).

Almost surely, 2^53879989 is an apocalyptic number.

It is an amenable number.

53879989 is a deficient number, since it is larger than the sum of its proper divisors (1253067).

53879989 is a wasteful number, since it uses less digits than its factorization.

53879989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253066.

The product of its digits is 4898880, while the sum is 58.

The square root of 53879989 is about 7340.2989721128. The cubic root of 53879989 is about 377.6960991589.

It can be divided in two parts, 5387 and 9989, that added together give a square (15376 = 124²).

The spelling of 53879989 in words is "fifty-three million, eight hundred seventy-nine thousand, nine hundred eighty-nine".