2090993 has 4 divisors (see below), whose sum is σ = 2096100. Its totient is φ = 2085888.

The previous prime is 2090989. The next prime is 2091053. The reversal of 2090993 is 3990902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 717409 + 1373584 = 847^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090993 - 2² = 2090989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2090923) 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, 1880 + ... + 2777.

It is an arithmetic number, because the mean of its divisors is an integer number (524025).

2^2090993 is an apocalyptic number.

It is an amenable number.

2090993 is a deficient number, since it is larger than the sum of its proper divisors (5107).

2090993 is an equidigital number, since it uses as much as digits as its factorization.

2090993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 2090993 is about 1446.0266249278. The cubic root of 2090993 is about 127.8745719566.

The spelling of 2090993 in words is "two million, ninety thousand, nine hundred ninety-three".