2309640139 has 2 divisors, whose sum is σ = 2309640140. Its totient is φ = 2309640138.

The previous prime is 2309640107. The next prime is 2309640149. The reversal of 2309640139 is 9310469032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2309640139 - 2⁵ = 2309640107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2309640098 and 2309640107.

It is not a weakly prime, because it can be changed into another prime (2309640149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154820069 + 1154820070.

It is an arithmetic number, because the mean of its divisors is an integer number (1154820070).

Almost surely, 2^2309640139 is an apocalyptic number.

2309640139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309640139 is an equidigital number, since it uses as much as digits as its factorization.

2309640139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 2309640139 is about 48058.7155363104. The cubic root of 2309640139 is about 1321.8477602518.

The spelling of 2309640139 in words is "two billion, three hundred nine million, six hundred forty thousand, one hundred thirty-nine".