2090999401 has 2 divisors, whose sum is σ = 2090999402. Its totient is φ = 2090999400.

The previous prime is 2090999369. The next prime is 2090999459. The reversal of 2090999401 is 1049990902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1093955625 + 997043776 = 33075^2 + 31576^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090999401 - 2⁵ = 2090999369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2090990401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045499700 + 1045499701.

It is an arithmetic number, because the mean of its divisors is an integer number (1045499701).

Almost surely, 2^2090999401 is an apocalyptic number.

It is an amenable number.

2090999401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090999401 is an equidigital number, since it uses as much as digits as its factorization.

2090999401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 2090999401 is about 45727.4469110183. The cubic root of 2090999401 is about 1278.7470244074.

The spelling of 2090999401 in words is "two billion, ninety million, nine hundred ninety-nine thousand, four hundred one".