24979189 has 2 divisors, whose sum is σ = 24979190. Its totient is φ = 24979188.

The previous prime is 24979183. The next prime is 24979223. The reversal of 24979189 is 98197942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23912100 + 1067089 = 4890^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 24979189 - 2⁷ = 24979061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24979183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12489594 + 12489595.

It is an arithmetic number, because the mean of its divisors is an integer number (12489595).

Almost surely, 2^24979189 is an apocalyptic number.

It is an amenable number.

24979189 is a deficient number, since it is larger than the sum of its proper divisors (1).

24979189 is an equidigital number, since it uses as much as digits as its factorization.

24979189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 24979189 is about 4997.9184667219. The cubic root of 24979189 is about 292.3206156532.

The spelling of 24979189 in words is "twenty-four million, nine hundred seventy-nine thousand, one hundred eighty-nine".