24744989 has 2 divisors, whose sum is σ = 24744990. Its totient is φ = 24744988.

The previous prime is 24744977. The next prime is 24744997. The reversal of 24744989 is 98944742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 6400900 = 4283^2 + 2530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24744989 is a prime.

It is a super-2 number, since 2×24744989² = 1224628961220242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24744949) 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, 12372494 + 12372495.

It is an arithmetic number, because the mean of its divisors is an integer number (12372495).

Almost surely, 2^24744989 is an apocalyptic number.

It is an amenable number.

24744989 is a deficient number, since it is larger than the sum of its proper divisors (1).

24744989 is an equidigital number, since it uses as much as digits as its factorization.

24744989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 24744989 is about 4974.4335355898. The cubic root of 24744989 is about 291.4041651606.

The spelling of 24744989 in words is "twenty-four million, seven hundred forty-four thousand, nine hundred eighty-nine".