93888891 has 6 divisors (see below), whose sum is σ = 135617300. Its totient is φ = 62592588.

The previous prime is 93888887. The next prime is 93888913. The reversal of 93888891 is 19888839.

It is not a de Polignac number, because 93888891 - 2² = 93888887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93888191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5216041 + ... + 5216058.

Almost surely, 2^93888891 is an apocalyptic number.

93888891 is a deficient number, since it is larger than the sum of its proper divisors (41728409).

93888891 is a wasteful number, since it uses less digits than its factorization.

93888891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10432105 (or 10432102 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 93888891 is about 9689.6280114357. The cubic root of 93888891 is about 454.5043767982.

The spelling of 93888891 in words is "ninety-three million, eight hundred eighty-eight thousand, eight hundred ninety-one".