2399897 has 2 divisors, whose sum is σ = 2399898. Its totient is φ = 2399896.

The previous prime is 2399869. The next prime is 2399911. The reversal of 2399897 is 7989932.

2399897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2399897 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1485961 + 913936 = 1219^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 2399897 - 2⁸ = 2399641 is a prime.

It is a super-2 number, since 2×2399897² = 11519011221218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2399807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199948 + 1199949.

It is an arithmetic number, because the mean of its divisors is an integer number (1199949).

2^2399897 is an apocalyptic number.

It is an amenable number.

2399897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2399897 is an equidigital number, since it uses as much as digits as its factorization.

2399897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 2399897 is about 1549.1600950192. The cubic root of 2399897 is about 133.8846746670.

The spelling of 2399897 in words is "two million, three hundred ninety-nine thousand, eight hundred ninety-seven".