97118279 has 2 divisors, whose sum is σ = 97118280. Its totient is φ = 97118278.

The previous prime is 97118249. The next prime is 97118317. The reversal of 97118279 is 97281179.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97118279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97118239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48559139 + 48559140.

It is an arithmetic number, because the mean of its divisors is an integer number (48559140).

Almost surely, 2^97118279 is an apocalyptic number.

97118279 is a deficient number, since it is larger than the sum of its proper divisors (1).

97118279 is an equidigital number, since it uses as much as digits as its factorization.

97118279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 44.

The square root of 97118279 is about 9854.8606788731. The cubic root of 97118279 is about 459.6567682188.

The spelling of 97118279 in words is "ninety-seven million, one hundred eighteen thousand, two hundred seventy-nine".