2489990 has 32 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 921600.

The previous prime is 2489947. The next prime is 2489999. The reversal of 2489990 is 999842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16415 + ... + 16565.

It is an arithmetic number, because the mean of its divisors is an integer number (150822).

2^2489990 is an apocalyptic number.

2489990 is a deficient number, since it is larger than the sum of its proper divisors (2336314).

2489990 is a wasteful number, since it uses less digits than its factorization.

2489990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 2489990 is about 1577.9702151815. The cubic root of 2489990 is about 135.5394963905.

The spelling of 2489990 in words is "two million, four hundred eighty-nine thousand, nine hundred ninety".