24749839 has 2 divisors, whose sum is σ = 24749840. Its totient is φ = 24749838.

The previous prime is 24749833. The next prime is 24749861. The reversal of 24749839 is 93894742.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24749839 - 2¹⁵ = 24717071 is a prime.

It is a super-2 number, since 2×24749839² = 1225109061051842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24749833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12374919 + 12374920.

It is an arithmetic number, because the mean of its divisors is an integer number (12374920).

Almost surely, 2^24749839 is an apocalyptic number.

24749839 is a deficient number, since it is larger than the sum of its proper divisors (1).

24749839 is an equidigital number, since it uses as much as digits as its factorization.

24749839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 24749839 is about 4974.9210043980. The cubic root of 24749839 is about 291.4232022523.

It can be divided in two parts, 247 and 49839, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 24749839 in words is "twenty-four million, seven hundred forty-nine thousand, eight hundred thirty-nine".