54869989 has 4 divisors (see below), whose sum is σ = 54895680. Its totient is φ = 54844300.

The previous prime is 54869987. The next prime is 54870029. The reversal of 54869989 is 98996845.

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 54869989 - 2¹ = 54869987 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 (54869981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9319 + ... + 14020.

It is an arithmetic number, because the mean of its divisors is an integer number (13723920).

Almost surely, 2^54869989 is an apocalyptic number.

It is an amenable number.

54869989 is a deficient number, since it is larger than the sum of its proper divisors (25691).

54869989 is a wasteful number, since it uses less digits than its factorization.

54869989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25690.

The product of its digits is 5598720, while the sum is 58.

The square root of 54869989 is about 7407.4279611752. The cubic root of 54869989 is about 379.9953577457.

The spelling of 54869989 in words is "fifty-four million, eight hundred sixty-nine thousand, nine hundred eighty-nine".