24813989 has 2 divisors, whose sum is σ = 24813990. Its totient is φ = 24813988.

The previous prime is 24813961. The next prime is 24814021. The reversal of 24813989 is 98931842.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24423364 + 390625 = 4942^2 + 625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24813989 is a prime.

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 (24813949) 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, 12406994 + 12406995.

It is an arithmetic number, because the mean of its divisors is an integer number (12406995).

Almost surely, 2^24813989 is an apocalyptic number.

It is an amenable number.

24813989 is a deficient number, since it is larger than the sum of its proper divisors (1).

24813989 is an equidigital number, since it uses as much as digits as its factorization.

24813989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 24813989 is about 4981.3641705862. The cubic root of 24813989 is about 291.6747684643.

The spelling of 24813989 in words is "twenty-four million, eight hundred thirteen thousand, nine hundred eighty-nine".