93889889 has 4 divisors (see below), whose sum is σ = 94857924. Its totient is φ = 92921856.

The previous prime is 93889867. The next prime is 93889891. The reversal of 93889889 is 98898839.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46348864 + 47541025 = 6808^2 + 6895^2 .

It is a cyclic number.

It is not a de Polignac number, because 93889889 - 2²⁰ = 92841313 is a prime.

It is a super-2 number, since 2×93889889² = 17630622512864642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93889819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483872 + ... + 484065.

It is an arithmetic number, because the mean of its divisors is an integer number (23714481).

Almost surely, 2^93889889 is an apocalyptic number.

It is an amenable number.

93889889 is a deficient number, since it is larger than the sum of its proper divisors (968035).

93889889 is an equidigital number, since it uses as much as digits as its factorization.

93889889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968034.

The product of its digits is 8957952, while the sum is 62.

The square root of 93889889 is about 9689.6795096639. The cubic root of 93889889 is about 454.5059871902.

The spelling of 93889889 in words is "ninety-three million, eight hundred eighty-nine thousand, eight hundred eighty-nine".