2422639 has 4 divisors (see below), whose sum is σ = 2429856. Its totient is φ = 2415424.

The previous prime is 2422627. The next prime is 2422643. The reversal of 2422639 is 9362242.

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

It is a cyclic number.

It is not a de Polignac number, because 2422639 - 2¹⁷ = 2291567 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 (2422699) 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, 3079 + ... + 3784.

It is an arithmetic number, because the mean of its divisors is an integer number (607464).

2^2422639 is an apocalyptic number.

2422639 is a deficient number, since it is larger than the sum of its proper divisors (7217).

2422639 is an equidigital number, since it uses as much as digits as its factorization.

2422639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216.

The product of its digits is 5184, while the sum is 28.

The square root of 2422639 is about 1556.4828942202. The cubic root of 2422639 is about 134.3062535679.

The spelling of 2422639 in words is "two million, four hundred twenty-two thousand, six hundred thirty-nine".