2799638 has 4 divisors (see below), whose sum is σ = 4199460. Its totient is φ = 1399818.

The previous prime is 2799637. The next prime is 2799647. The reversal of 2799638 is 8369972.

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

It is a d-powerful number, because it can be written as 2²¹ + 7⁶ + 9³ + 9⁶ + 6³ + 3⁹ + 8⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2799637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699908 + ... + 699911.

It is an arithmetic number, because the mean of its divisors is an integer number (1049865).

2^2799638 is an apocalyptic number.

2799638 is a deficient number, since it is larger than the sum of its proper divisors (1399822).

2799638 is a wasteful number, since it uses less digits than its factorization.

2799638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399821.

The product of its digits is 163296, while the sum is 44.

The square root of 2799638 is about 1673.2118813826. The cubic root of 2799638 is about 140.9399002792.

The spelling of 2799638 in words is "two million, seven hundred ninety-nine thousand, six hundred thirty-eight".