83385999 has 12 divisors (see below), whose sum is σ = 120975400. Its totient is φ = 55346544.

The previous prime is 83385979. The next prime is 83386027. The reversal of 83385999 is 99958338.

It is not a de Polignac number, because 83385999 - 2⁷ = 83385871 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 (83385919) 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, 18169 + ... + 22290.

Almost surely, 2^83385999 is an apocalyptic number.

83385999 is a deficient number, since it is larger than the sum of its proper divisors (37589401).

83385999 is a wasteful number, since it uses less digits than its factorization.

83385999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40694 (or 40691 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 83385999 is about 9131.5934534998. The cubic root of 83385999 is about 436.8822283859.

The spelling of 83385999 in words is "eighty-three million, three hundred eighty-five thousand, nine hundred ninety-nine".