24889487939 has 2 divisors, whose sum is σ = 24889487940. Its totient is φ = 24889487938.

The previous prime is 24889487929. The next prime is 24889487947. The reversal of 24889487939 is 93978498842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 24889487939 - 2²⁸ = 24621052483 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (24889487929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12444743969 + 12444743970.

It is an arithmetic number, because the mean of its divisors is an integer number (12444743970).

Almost surely, 2^24889487939 is an apocalyptic number.

24889487939 is a deficient number, since it is larger than the sum of its proper divisors (1).

24889487939 is an equidigital number, since it uses as much as digits as its factorization.

24889487939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250822656, while the sum is 71.

The spelling of 24889487939 in words is "twenty-four billion, eight hundred eighty-nine million, four hundred eighty-seven thousand, nine hundred thirty-nine".