97136393 has 4 divisors (see below), whose sum is σ = 97166148. Its totient is φ = 97106640.

The previous prime is 97136387. The next prime is 97136407. The reversal of 97136393 is 39363179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39363179 = 29 ⋅1357351.

It can be written as a sum of positive squares in 2 ways, for example, as 80227849 + 16908544 = 8957^2 + 4112^2 .

It is a cyclic number.

It is not a de Polignac number, because 97136393 - 2⁶ = 97136329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97136393.

It is not an unprimeable number, because it can be changed into a prime (97136353) 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 in 3 ways as a sum of consecutive naturals, for example, 9278 + ... + 16743.

It is an arithmetic number, because the mean of its divisors is an integer number (24291537).

Almost surely, 2^97136393 is an apocalyptic number.

It is an amenable number.

97136393 is a deficient number, since it is larger than the sum of its proper divisors (29755).

97136393 is a wasteful number, since it uses less digits than its factorization.

97136393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29754.

The product of its digits is 91854, while the sum is 41.

The square root of 97136393 is about 9855.7796748913. The cubic root of 97136393 is about 459.6853440447.

The spelling of 97136393 in words is "ninety-seven million, one hundred thirty-six thousand, three hundred ninety-three".