26979189 has 16 divisors (see below), whose sum is σ = 37713984. Its totient is φ = 17136000.

The previous prime is 26979181. The next prime is 26979223. The reversal of 26979189 is 98197962.

It is a happy number.

It is not a de Polignac number, because 26979189 - 2³ = 26979181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26979181) 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, 2739 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (2357124).

Almost surely, 2^26979189 is an apocalyptic number.

It is an amenable number.

26979189 is a deficient number, since it is larger than the sum of its proper divisors (10734795).

26979189 is a wasteful number, since it uses less digits than its factorization.

26979189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5188.

The product of its digits is 489888, while the sum is 51.

The square root of 26979189 is about 5194.1494972709. The cubic root of 26979189 is about 299.9229024105.

The spelling of 26979189 in words is "twenty-six million, nine hundred seventy-nine thousand, one hundred eighty-nine".