99983939 has 8 divisors (see below), whose sum is σ = 110568432. Its totient is φ = 89648640.

The previous prime is 99983929. The next prime is 99983957. The reversal of 99983939 is 93938999.

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 99983939 - 2⁸ = 99983683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99983929) 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, 61454 + ... + 63059.

It is an arithmetic number, because the mean of its divisors is an integer number (13821054).

Almost surely, 2^99983939 is an apocalyptic number.

99983939 is a deficient number, since it is larger than the sum of its proper divisors (10584493).

99983939 is a wasteful number, since it uses less digits than its factorization.

99983939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124597.

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

The square root of 99983939 is about 9999.1969177529. The cubic root of 99983939 is about 464.1340325114.

The spelling of 99983939 in words is "ninety-nine million, nine hundred eighty-three thousand, nine hundred thirty-nine".