16389879 has 16 divisors (see below), whose sum is σ = 24292224. Its totient is φ = 9744800.

The previous prime is 16389833. The next prime is 16389883. The reversal of 16389879 is 97898361.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16389879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389889) 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, 2937 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (1518264).

Almost surely, 2^16389879 is an apocalyptic number.

16389879 is a deficient number, since it is larger than the sum of its proper divisors (7902345).

16389879 is a wasteful number, since it uses less digits than its factorization.

16389879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9438.

The product of its digits is 653184, while the sum is 51.

The square root of 16389879 is about 4048.4415520049. The cubic root of 16389879 is about 254.0145433630.

The spelling of 16389879 in words is "sixteen million, three hundred eighty-nine thousand, eight hundred seventy-nine".