2638479 has 4 divisors (see below), whose sum is σ = 3517976. Its totient is φ = 1758984.

The previous prime is 2638477. The next prime is 2638501. The reversal of 2638479 is 9748362.

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

It is not a de Polignac number, because 2638479 - 2¹ = 2638477 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6⁵ + 3¹² + 8⁷ + 4 + 7² + 9 .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638477) 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, 439744 + ... + 439749.

It is an arithmetic number, because the mean of its divisors is an integer number (879494).

2^2638479 is an apocalyptic number.

2638479 is a deficient number, since it is larger than the sum of its proper divisors (879497).

2638479 is an equidigital number, since it uses as much as digits as its factorization.

2638479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879496.

The product of its digits is 72576, while the sum is 39.

The square root of 2638479 is about 1624.3395580974. The cubic root of 2638479 is about 138.1819171939.

The spelling of 2638479 in words is "two million, six hundred thirty-eight thousand, four hundred seventy-nine".