97198279 has 2 divisors, whose sum is σ = 97198280. Its totient is φ = 97198278.

The previous prime is 97198273. The next prime is 97198291. The reversal of 97198279 is 97289179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97198279 - 2⁷ = 97198151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97198273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48599139 + 48599140.

It is an arithmetic number, because the mean of its divisors is an integer number (48599140).

Almost surely, 2^97198279 is an apocalyptic number.

97198279 is a deficient number, since it is larger than the sum of its proper divisors (1).

97198279 is an equidigital number, since it uses as much as digits as its factorization.

97198279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 52.

The square root of 97198279 is about 9858.9187541028. The cubic root of 97198279 is about 459.7829458017.

The spelling of 97198279 in words is "ninety-seven million, one hundred ninety-eight thousand, two hundred seventy-nine".