24979949 has 2 divisors, whose sum is σ = 24979950. Its totient is φ = 24979948.

The previous prime is 24979939. The next prime is 24979957. The reversal of 24979949 is 94997942.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 3422500 = 4643^2 + 1850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24979949 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24979949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24979939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12489974 + 12489975.

It is an arithmetic number, because the mean of its divisors is an integer number (12489975).

Almost surely, 2^24979949 is an apocalyptic number.

It is an amenable number.

24979949 is a deficient number, since it is larger than the sum of its proper divisors (1).

24979949 is an equidigital number, since it uses as much as digits as its factorization.

24979949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 24979949 is about 4997.9944977961. The cubic root of 24979949 is about 292.3235802732.

The spelling of 24979949 in words is "twenty-four million, nine hundred seventy-nine thousand, nine hundred forty-nine".