24705139 has 2 divisors, whose sum is σ = 24705140. Its totient is φ = 24705138.

The previous prime is 24705119. The next prime is 24705143. The reversal of 24705139 is 93150742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 24705139 - 2⁹ = 24704627 is a prime.

It is a super-2 number, since 2×24705139² = 1220687786018642, which contains 22 as substring.

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 24705139.

It is not a weakly prime, because it can be changed into another prime (24705119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12352569 + 12352570.

It is an arithmetic number, because the mean of its divisors is an integer number (12352570).

Almost surely, 2^24705139 is an apocalyptic number.

24705139 is a deficient number, since it is larger than the sum of its proper divisors (1).

24705139 is an equidigital number, since it uses as much as digits as its factorization.

24705139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 24705139 is about 4970.4264404576. The cubic root of 24705139 is about 291.2476527284.

The spelling of 24705139 in words is "twenty-four million, seven hundred five thousand, one hundred thirty-nine".