2439897 has 4 divisors (see below), whose sum is σ = 3253200. Its totient is φ = 1626596.

The previous prime is 2439893. The next prime is 2439901. The reversal of 2439897 is 7989342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2439893) and next prime (2439901).

It is a cyclic number.

It is not a de Polignac number, because 2439897 - 2² = 2439893 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2439893) 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, 406647 + ... + 406652.

It is an arithmetic number, because the mean of its divisors is an integer number (813300).

2^2439897 is an apocalyptic number.

It is an amenable number.

2439897 is a deficient number, since it is larger than the sum of its proper divisors (813303).

2439897 is an equidigital number, since it uses as much as digits as its factorization.

2439897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813302.

The product of its digits is 108864, while the sum is 42.

The square root of 2439897 is about 1562.0169653368. The cubic root of 2439897 is about 134.6244155867.

The spelling of 2439897 in words is "two million, four hundred thirty-nine thousand, eight hundred ninety-seven".