24249989 has 4 divisors (see below), whose sum is σ = 24262080. Its totient is φ = 24237900.

The previous prime is 24249971. The next prime is 24249997. The reversal of 24249989 is 98994242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24249989 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 (24249949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2237 + ... + 7314.

It is an arithmetic number, because the mean of its divisors is an integer number (6065520).

Almost surely, 2^24249989 is an apocalyptic number.

It is an amenable number.

24249989 is a deficient number, since it is larger than the sum of its proper divisors (12091).

24249989 is an equidigital number, since it uses as much as digits as its factorization.

24249989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12090.

The product of its digits is 373248, while the sum is 47.

The square root of 24249989 is about 4924.4277840171. The cubic root of 24249989 is about 289.4479748378.

The spelling of 24249989 in words is "twenty-four million, two hundred forty-nine thousand, nine hundred eighty-nine".