2490289 has 4 divisors (see below), whose sum is σ = 2493556. Its totient is φ = 2487024.

The previous prime is 2490283. The next prime is 2490307. The reversal of 2490289 is 9820942.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 577600 + 1912689 = 760^2 + 1383^2 .

It is a cyclic number.

It is not a de Polignac number, because 2490289 - 2⁷ = 2490161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2490283) 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, 187 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (623389).

2^2490289 is an apocalyptic number.

It is an amenable number.

2490289 is a deficient number, since it is larger than the sum of its proper divisors (3267).

2490289 is a wasteful number, since it uses less digits than its factorization.

2490289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 2490289 is about 1578.0649543032. The cubic root of 2490289 is about 135.5449214039.

The spelling of 2490289 in words is "two million, four hundred ninety thousand, two hundred eighty-nine".