24497989 has 2 divisors, whose sum is σ = 24497990. Its totient is φ = 24497988.

The previous prime is 24497987. The next prime is 24497999. The reversal of 24497989 is 98979442.

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., 23136100 + 1361889 = 4810^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 24497989 - 2¹ = 24497987 is a prime.

Together with 24497987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24497987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12248994 + 12248995.

It is an arithmetic number, because the mean of its divisors is an integer number (12248995).

Almost surely, 2^24497989 is an apocalyptic number.

It is an amenable number.

24497989 is a deficient number, since it is larger than the sum of its proper divisors (1).

24497989 is an equidigital number, since it uses as much as digits as its factorization.

24497989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 24497989 is about 4949.5443224604. The cubic root of 24497989 is about 290.4313398838.

The spelling of 24497989 in words is "twenty-four million, four hundred ninety-seven thousand, nine hundred eighty-nine".