2299639 has 4 divisors (see below), whose sum is σ = 2337400. Its totient is φ = 2261880.

The previous prime is 2299637. The next prime is 2299651. The reversal of 2299639 is 9369922.

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

It is not a de Polignac number, because 2299639 - 2¹ = 2299637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2299637) 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 3 ways as a sum of consecutive naturals, for example, 18789 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (584350).

2^2299639 is an apocalyptic number.

2299639 is a deficient number, since it is larger than the sum of its proper divisors (37761).

2299639 is an equidigital number, since it uses as much as digits as its factorization.

2299639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37760.

The product of its digits is 52488, while the sum is 40.

The square root of 2299639 is about 1516.4560659643. The cubic root of 2299639 is about 131.9937056993.

The spelling of 2299639 in words is "two million, two hundred ninety-nine thousand, six hundred thirty-nine".