2491396 has 6 divisors (see below), whose sum is σ = 4359950. Its totient is φ = 1245696.

The previous prime is 2491387. The next prime is 2491397. The reversal of 2491396 is 6931942.

It can be written as a sum of positive squares in only one way, i.e., 2143296 + 348100 = 1464^2 + 590^2 .

It is not an unprimeable number, because it can be changed into a prime (2491397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311421 + ... + 311428.

2^2491396 is an apocalyptic number.

It is an amenable number.

2491396 is a deficient number, since it is larger than the sum of its proper divisors (1868554).

2491396 is a wasteful number, since it uses less digits than its factorization.

2491396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622853 (or 622851 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 2491396 is about 1578.4156613516. The cubic root of 2491396 is about 135.5650028751.

The spelling of 2491396 in words is "two million, four hundred ninety-one thousand, three hundred ninety-six".