2389975997 has 2 divisors, whose sum is σ = 2389975998. Its totient is φ = 2389975996.

The previous prime is 2389975949. The next prime is 2389975999. The reversal of 2389975997 is 7995799832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1200691801 + 1189284196 = 34651^2 + 34486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389975997 - 2¹² = 2389971901 is a prime.

It is a super-2 number, since 2×2389975997² = 11423970532472288018, which contains 22 as substring.

Together with 2389975999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389975999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194987998 + 1194987999.

It is an arithmetic number, because the mean of its divisors is an integer number (1194987999).

Almost surely, 2^2389975997 is an apocalyptic number.

It is an amenable number.

2389975997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389975997 is an equidigital number, since it uses as much as digits as its factorization.

2389975997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77157360, while the sum is 68.

The square root of 2389975997 is about 48887.3807541374. The cubic root of 2389975997 is about 1336.9992996071. Note that the first 3 decimals are identical.

The spelling of 2389975997 in words is "two billion, three hundred eighty-nine million, nine hundred seventy-five thousand, nine hundred ninety-seven".