97845239 has 2 divisors, whose sum is σ = 97845240. Its totient is φ = 97845238.

The previous prime is 97845233. The next prime is 97845257. The reversal of 97845239 is 93254879.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97845239 - 2¹² = 97841143 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97845193 and 97845202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97845233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48922619 + 48922620.

It is an arithmetic number, because the mean of its divisors is an integer number (48922620).

Almost surely, 2^97845239 is an apocalyptic number.

97845239 is a deficient number, since it is larger than the sum of its proper divisors (1).

97845239 is an equidigital number, since it uses as much as digits as its factorization.

97845239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 97845239 is about 9891.6752372892. The cubic root of 97845239 is about 460.8008089153.

The spelling of 97845239 in words is "ninety-seven million, eight hundred forty-five thousand, two hundred thirty-nine".