91885338 has 12 divisors (see below), whose sum is σ = 199084938. Its totient is φ = 30628440.

The previous prime is 91885309. The next prime is 91885351. The reversal of 91885338 is 83358819.

It can be written as a sum of positive squares in only one way, i.e., 77845329 + 14040009 = 8823^2 + 3747^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91885293 and 91885302.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2552353 + ... + 2552388.

Almost surely, 2^91885338 is an apocalyptic number.

91885338 is an abundant number, since it is smaller than the sum of its proper divisors (107199600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91885338 is a wasteful number, since it uses less digits than its factorization.

91885338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104749 (or 5104746 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 91885338 is about 9585.6840131521. The cubic root of 91885338 is about 451.2481201979.

The spelling of 91885338 in words is "ninety-one million, eight hundred eighty-five thousand, three hundred thirty-eight".