24985989 has 48 divisors (see below), whose sum is σ = 44041088. Its totient is φ = 13856832.

The previous prime is 24985979. The next prime is 24985991. The reversal of 24985989 is 98958942.

24985989 is a `hidden beast` number, since 2 + 49 + 8 + 598 + 9 = 666.

It is not a de Polignac number, because 24985989 - 2⁷ = 24985861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24985979) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62739 + ... + 63135.

Almost surely, 2^24985989 is an apocalyptic number.

It is an amenable number.

24985989 is a deficient number, since it is larger than the sum of its proper divisors (19055099).

24985989 is an equidigital number, since it uses as much as digits as its factorization.

24985989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 444 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 24985989 is about 4998.5987036369. The cubic root of 24985989 is about 292.3471390635.

The spelling of 24985989 in words is "twenty-four million, nine hundred eighty-five thousand, nine hundred eighty-nine".