99389939 has 8 divisors (see below), whose sum is σ = 114803568. Its totient is φ = 85039360.

The previous prime is 99389921. The next prime is 99389947. The reversal of 99389939 is 93998399.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99389939 - 2¹² = 99385843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99389909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265562 + ... + 265935.

It is an arithmetic number, because the mean of its divisors is an integer number (14350446).

Almost surely, 2^99389939 is an apocalyptic number.

99389939 is a deficient number, since it is larger than the sum of its proper divisors (15413629).

99389939 is a wasteful number, since it uses less digits than its factorization.

99389939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531525.

The product of its digits is 4251528, while the sum is 59.

The square root of 99389939 is about 9969.4502857480. The cubic root of 99389939 is about 463.2130732979.

The spelling of 99389939 in words is "ninety-nine million, three hundred eighty-nine thousand, nine hundred thirty-nine".