2397949 has 2 divisors, whose sum is σ = 2397950. Its totient is φ = 2397948.

The previous prime is 2397947. The next prime is 2397961. The reversal of 2397949 is 9497932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 338724 = 1435^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2397949 - 2¹ = 2397947 is a prime.

Together with 2397947, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹⁹ + 3 + 9² + 7⁷ + 9³ + 4¹⁰ + 9³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2397947) 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 as a sum of consecutive naturals, namely, 1198974 + 1198975.

It is an arithmetic number, because the mean of its divisors is an integer number (1198975).

2^2397949 is an apocalyptic number.

It is an amenable number.

2397949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2397949 is an equidigital number, since it uses as much as digits as its factorization.

2397949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 2397949 is about 1548.5312395945. The cubic root of 2397949 is about 133.8484400641.

The spelling of 2397949 in words is "two million, three hundred ninety-seven thousand, nine hundred forty-nine".