2117395459 has 2 divisors, whose sum is σ = 2117395460. Its totient is φ = 2117395458.

The previous prime is 2117395453. The next prime is 2117395499. The reversal of 2117395459 is 9545937112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2117395459 - 2³ = 2117395451 is a prime.

It is not a weakly prime, because it can be changed into another prime (2117395451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058697729 + 1058697730.

It is an arithmetic number, because the mean of its divisors is an integer number (1058697730).

Almost surely, 2^2117395459 is an apocalyptic number.

2117395459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117395459 is an equidigital number, since it uses as much as digits as its factorization.

2117395459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 46.

The square root of 2117395459 is about 46015.1655326806. The cubic root of 2117395459 is about 1284.1053610209.

The spelling of 2117395459 in words is "two billion, one hundred seventeen million, three hundred ninety-five thousand, four hundred fifty-nine".