23739109 has 2 divisors, whose sum is σ = 23739110. Its totient is φ = 23739108.

The previous prime is 23739103. The next prime is 23739137. The reversal of 23739109 is 90193732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 1555009 = 4710^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 23739109 - 2⁹ = 23738597 is a prime.

It is a super-2 number, since 2×23739109² = 1127090592227762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23739103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11869554 + 11869555.

It is an arithmetic number, because the mean of its divisors is an integer number (11869555).

Almost surely, 2^23739109 is an apocalyptic number.

It is an amenable number.

23739109 is a deficient number, since it is larger than the sum of its proper divisors (1).

23739109 is an equidigital number, since it uses as much as digits as its factorization.

23739109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 23739109 is about 4872.2796512516. The cubic root of 23739109 is about 287.4009095184.

The spelling of 23739109 in words is "twenty-three million, seven hundred thirty-nine thousand, one hundred nine".