2159340439 has 2 divisors, whose sum is σ = 2159340440. Its totient is φ = 2159340438.

The previous prime is 2159340437. The next prime is 2159340497. The reversal of 2159340439 is 9340439512.

2159340439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2159340439 - 2¹ = 2159340437 is a prime.

It is a super-2 number, since 2×2159340439² = 9325502263001425442, which contains 22 as substring.

Together with 2159340437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2159340437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079670219 + 1079670220.

It is an arithmetic number, because the mean of its divisors is an integer number (1079670220).

Almost surely, 2^2159340439 is an apocalyptic number.

2159340439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159340439 is an equidigital number, since it uses as much as digits as its factorization.

2159340439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 2159340439 is about 46468.7038661506. The cubic root of 2159340439 is about 1292.5292283009.

The spelling of 2159340439 in words is "two billion, one hundred fifty-nine million, three hundred forty thousand, four hundred thirty-nine".