97188239 has 2 divisors, whose sum is σ = 97188240. Its totient is φ = 97188238.

The previous prime is 97188209. The next prime is 97188241. The reversal of 97188239 is 93288179.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97188239 - 2¹⁶ = 97122703 is a prime.

It is a super-2 number, since 2×97188239² = 18891107599842242, which contains 22 as substring.

Together with 97188241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97188193 and 97188202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97188209) 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, 48594119 + 48594120.

It is an arithmetic number, because the mean of its divisors is an integer number (48594120).

Almost surely, 2^97188239 is an apocalyptic number.

97188239 is a deficient number, since it is larger than the sum of its proper divisors (1).

97188239 is an equidigital number, since it uses as much as digits as its factorization.

97188239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 97188239 is about 9858.4095573272. The cubic root of 97188239 is about 459.7671143152.

The spelling of 97188239 in words is "ninety-seven million, one hundred eighty-eight thousand, two hundred thirty-nine".