2497979 has 4 divisors (see below), whose sum is σ = 2725080. Its totient is φ = 2270880.

The previous prime is 2497967. The next prime is 2497991. The reversal of 2497979 is 9797942.

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

It is an interprime number because it is at equal distance from previous prime (2497967) and next prime (2497991).

It is a cyclic number.

It is not a de Polignac number, because 2497979 - 2⁸ = 2497723 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2497939) 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 in 3 ways as a sum of consecutive naturals, for example, 113534 + ... + 113555.

It is an arithmetic number, because the mean of its divisors is an integer number (681270).

2^2497979 is an apocalyptic number.

2497979 is a deficient number, since it is larger than the sum of its proper divisors (227101).

2497979 is a wasteful number, since it uses less digits than its factorization.

2497979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227100.

The product of its digits is 285768, while the sum is 47.

The square root of 2497979 is about 1580.4996045555. The cubic root of 2497979 is about 135.6842987170.

It can be divided in two parts, 249 and 7979, that added together give a palindrome (8228).

The spelling of 2497979 in words is "two million, four hundred ninety-seven thousand, nine hundred seventy-nine".