2579938 has 4 divisors (see below), whose sum is σ = 3869910. Its totient is φ = 1289968.

The previous prime is 2579923. The next prime is 2579939. The reversal of 2579938 is 8399752.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 439569 = 1463^2 + 663^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2579894 and 2579903.

It is not an unprimeable number, because it can be changed into a prime (2579939) 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 as a sum of consecutive naturals, namely, 644983 + ... + 644986.

2^2579938 is an apocalyptic number.

2579938 is a deficient number, since it is larger than the sum of its proper divisors (1289972).

2579938 is a wasteful number, since it uses less digits than its factorization.

2579938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289971.

The product of its digits is 136080, while the sum is 43.

The square root of 2579938 is about 1606.2185405480. The cubic root of 2579938 is about 137.1522983538.

The spelling of 2579938 in words is "two million, five hundred seventy-nine thousand, nine hundred thirty-eight".