24939149 has 2 divisors, whose sum is σ = 24939150. Its totient is φ = 24939148.

The previous prime is 24939139. The next prime is 24939181. The reversal of 24939149 is 94193942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14115049 + 10824100 = 3757^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 24939149 - 2⁴ = 24939133 is a prime.

It is a super-2 number, since 2×24939149² = 1243922305688402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24939139) 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 as a sum of consecutive naturals, namely, 12469574 + 12469575.

It is an arithmetic number, because the mean of its divisors is an integer number (12469575).

Almost surely, 2^24939149 is an apocalyptic number.

It is an amenable number.

24939149 is a deficient number, since it is larger than the sum of its proper divisors (1).

24939149 is an equidigital number, since it uses as much as digits as its factorization.

24939149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 24939149 is about 4993.9111926425. The cubic root of 24939149 is about 292.1643418728.

The spelling of 24939149 in words is "twenty-four million, nine hundred thirty-nine thousand, one hundred forty-nine".