2159890399 has 2 divisors, whose sum is σ = 2159890400. Its totient is φ = 2159890398.

The previous prime is 2159890363. The next prime is 2159890487. The reversal of 2159890399 is 9930989512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2159890399 - 2¹¹ = 2159888351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2159890319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079945199 + 1079945200.

It is an arithmetic number, because the mean of its divisors is an integer number (1079945200).

Almost surely, 2^2159890399 is an apocalyptic number.

2159890399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159890399 is an equidigital number, since it uses as much as digits as its factorization.

2159890399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The square root of 2159890399 is about 46474.6210205097. The cubic root of 2159890399 is about 1292.6389499274.

The spelling of 2159890399 in words is "two billion, one hundred fifty-nine million, eight hundred ninety thousand, three hundred ninety-nine".