2479997 has 4 divisors (see below), whose sum is σ = 2670780. Its totient is φ = 2289216.

The previous prime is 2479991. The next prime is 2480003. The reversal of 2479997 is 7999742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7999742 = 2 ⋅3999871.

It is an interprime number because it is at equal distance from previous prime (2479991) and next prime (2480003).

It can be written as a sum of positive squares in 2 ways, for example, as 894916 + 1585081 = 946^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 2479997 - 2²⁰ = 1431421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2479991) 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, 95372 + ... + 95397.

It is an arithmetic number, because the mean of its divisors is an integer number (667695).

2^2479997 is an apocalyptic number.

It is an amenable number.

2479997 is a deficient number, since it is larger than the sum of its proper divisors (190783).

2479997 is a wasteful number, since it uses less digits than its factorization.

2479997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190782.

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

The square root of 2479997 is about 1574.8006223011. The cubic root of 2479997 is about 135.3579344623.

The spelling of 2479997 in words is "two million, four hundred seventy-nine thousand, nine hundred ninety-seven".