93988909 has 12 divisors (see below), whose sum is σ = 109560384. Its totient is φ = 80395224.

The previous prime is 93988891. The next prime is 93988919. The reversal of 93988909 is 90988939.

It is not a de Polignac number, because 93988909 - 2¹⁷ = 93857837 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 93988909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93988919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25884 + ... + 29290.

It is an arithmetic number, because the mean of its divisors is an integer number (9130032).

Almost surely, 2^93988909 is an apocalyptic number.

It is an amenable number.

93988909 is a deficient number, since it is larger than the sum of its proper divisors (15571475).

93988909 is a wasteful number, since it uses less digits than its factorization.

93988909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984 (or 3977 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 93988909 is about 9694.7877233078. The cubic root of 93988909 is about 454.6657110652.

The spelling of 93988909 in words is "ninety-three million, nine hundred eighty-eight thousand, nine hundred nine".