24649139 has 2 divisors, whose sum is σ = 24649140. Its totient is φ = 24649138.

The previous prime is 24649117. The next prime is 24649147. The reversal of 24649139 is 93194642.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24649139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (24649189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12324569 + 12324570.

It is an arithmetic number, because the mean of its divisors is an integer number (12324570).

Almost surely, 2^24649139 is an apocalyptic number.

24649139 is a deficient number, since it is larger than the sum of its proper divisors (1).

24649139 is an equidigital number, since it uses as much as digits as its factorization.

24649139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 24649139 is about 4964.7899250623. The cubic root of 24649139 is about 291.0274258426.

The spelling of 24649139 in words is "twenty-four million, six hundred forty-nine thousand, one hundred thirty-nine".