2090999459 has 2 divisors, whose sum is σ = 2090999460. Its totient is φ = 2090999458.

The previous prime is 2090999401. The next prime is 2090999527. The reversal of 2090999459 is 9549990902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2090999459 - 2²⁴ = 2074222243 is a prime.

It is not a weakly prime, because it can be changed into another prime (2090999059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045499729 + 1045499730.

It is an arithmetic number, because the mean of its divisors is an integer number (1045499730).

Almost surely, 2^2090999459 is an apocalyptic number.

2090999459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090999459 is an equidigital number, since it uses as much as digits as its factorization.

2090999459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2361960, while the sum is 56.

The square root of 2090999459 is about 45727.4475452107. The cubic root of 2090999459 is about 1278.7470362307.

The spelling of 2090999459 in words is "two billion, ninety million, nine hundred ninety-nine thousand, four hundred fifty-nine".