2639492 has 6 divisors (see below), whose sum is σ = 4619118. Its totient is φ = 1319744.

The previous prime is 2639491. The next prime is 2639501. The reversal of 2639492 is 2949362.

It can be written as a sum of positive squares in only one way, i.e., 2637376 + 2116 = 1624^2 + 46^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2639491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329933 + ... + 329940.

It is an arithmetic number, because the mean of its divisors is an integer number (769853).

2^2639492 is an apocalyptic number.

It is an amenable number.

2639492 is a deficient number, since it is larger than the sum of its proper divisors (1979626).

2639492 is a wasteful number, since it uses less digits than its factorization.

2639492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659877 (or 659875 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 2639492 is about 1624.6513472127. The cubic root of 2639492 is about 138.1995991452.

The spelling of 2639492 in words is "two million, six hundred thirty-nine thousand, four hundred ninety-two".