2090999402 has 8 divisors (see below), whose sum is σ = 3145807236. Its totient is φ = 1042396992.

The previous prime is 2090999401. The next prime is 2090999459. The reversal of 2090999402 is 2049990902.

It can be written as a sum of positive squares in 2 ways, for example, as 1835351281 + 255648121 = 42841^2 + 15989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2090999401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550513 + ... + 1551860.

Almost surely, 2^2090999402 is an apocalyptic number.

2090999402 is a deficient number, since it is larger than the sum of its proper divisors (1054807834).

2090999402 is a wasteful number, since it uses less digits than its factorization.

2090999402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102712.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 2090999402 is about 45727.4469219527. The cubic root of 2090999402 is about 1278.7470246113.

The spelling of 2090999402 in words is "two billion, ninety million, nine hundred ninety-nine thousand, four hundred two".