24400989 has 12 divisors (see below), whose sum is σ = 35356672. Its totient is φ = 16216200.

The previous prime is 24400979. The next prime is 24400991. The reversal of 24400989 is 98900442.

It is a happy number.

24400989 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 24400989 - 2⁴ = 24400973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24400949) 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 in 11 ways as a sum of consecutive naturals, for example, 1117 + ... + 7074.

Almost surely, 2^24400989 is an apocalyptic number.

It is an amenable number.

24400989 is a deficient number, since it is larger than the sum of its proper divisors (10955683).

24400989 is a wasteful number, since it uses less digits than its factorization.

24400989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8528 (or 8525 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 24400989 is about 4939.7357216758. The cubic root of 24400989 is about 290.0475110426.

The spelling of 24400989 in words is "twenty-four million, four hundred thousand, nine hundred eighty-nine".