2391027239 has 2 divisors, whose sum is σ = 2391027240. Its totient is φ = 2391027238.

The previous prime is 2391027211. The next prime is 2391027259. The reversal of 2391027239 is 9327201932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2391027239 is a prime.

It is a super-2 number, since 2×2391027239² = 11434022515279926242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2391027259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195513619 + 1195513620.

It is an arithmetic number, because the mean of its divisors is an integer number (1195513620).

Almost surely, 2^2391027239 is an apocalyptic number.

2391027239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391027239 is an equidigital number, since it uses as much as digits as its factorization.

2391027239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 2391027239 is about 48898.1312424105. The cubic root of 2391027239 is about 1337.1952993154.

The spelling of 2391027239 in words is "two billion, three hundred ninety-one million, twenty-seven thousand, two hundred thirty-nine".