2299990 has 64 divisors (see below), whose sum is σ = 5391360. Its totient is φ = 685440.

The previous prime is 2299963. The next prime is 2300003. The reversal of 2299990 is 999922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22279 + ... + 22381.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^2299990 is an apocalyptic number.

2299990 is an abundant number, since it is smaller than the sum of its proper divisors (3091370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2299990 is a wasteful number, since it uses less digits than its factorization.

2299990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 2299990 is about 1516.5717919044. The cubic root of 2299990 is about 132.0004208741. Note that the first 3 decimals are identical.

It can be divided in two parts, 2 and 299990, that added together give a palindrome (299992).

The spelling of 2299990 in words is "two million, two hundred ninety-nine thousand, nine hundred ninety".