97993538 has 16 divisors (see below), whose sum is σ = 151227384. Its totient is φ = 47589120.

The previous prime is 97993531. The next prime is 97993549. The reversal of 97993538 is 83539979.

It can be written as a sum of positive squares in 4 ways, for example, as 92409769 + 5583769 = 9613^2 + 2363^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 97993538.

It is not an unprimeable number, because it can be changed into a prime (97993531) 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 7 ways as a sum of consecutive naturals, for example, 74906 + ... + 76202.

Almost surely, 2^97993538 is an apocalyptic number.

97993538 is a deficient number, since it is larger than the sum of its proper divisors (53233846).

97993538 is a wasteful number, since it uses less digits than its factorization.

97993538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357.

The product of its digits is 1837080, while the sum is 53.

The square root of 97993538 is about 9899.1685509441. The cubic root of 97993538 is about 461.0334954323.

The spelling of 97993538 in words is "ninety-seven million, nine hundred ninety-three thousand, five hundred thirty-eight".