93789989 has 4 divisors (see below), whose sum is σ = 93993900. Its totient is φ = 93586080.

The previous prime is 93789967. The next prime is 93789991. The reversal of 93789989 is 98998739.

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 22944100 + 70845889 = 4790^2 + 8417^2 .

It is a cyclic number.

It is not a de Polignac number, because 93789989 - 2⁸ = 93789733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93789389) 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, 101264 + ... + 102185.

It is an arithmetic number, because the mean of its divisors is an integer number (23498475).

Almost surely, 2^93789989 is an apocalyptic number.

It is an amenable number.

93789989 is a deficient number, since it is larger than the sum of its proper divisors (203911).

93789989 is a wasteful number, since it uses less digits than its factorization.

93789989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203910.

The product of its digits is 8817984, while the sum is 62.

The square root of 93789989 is about 9684.5231684374. The cubic root of 93789989 is about 454.3447299913.

The spelling of 93789989 in words is "ninety-three million, seven hundred eighty-nine thousand, nine hundred eighty-nine".