83305939 has 4 divisors (see below), whose sum is σ = 83329624. Its totient is φ = 83282256.

The previous prime is 83305879. The next prime is 83305961. The reversal of 83305939 is 93950338.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93950338 = 2 ⋅46975169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83305939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83305969) 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, 5397 + ... + 13990.

It is an arithmetic number, because the mean of its divisors is an integer number (20832406).

Almost surely, 2^83305939 is an apocalyptic number.

83305939 is a deficient number, since it is larger than the sum of its proper divisors (23685).

83305939 is a wasteful number, since it uses less digits than its factorization.

83305939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23684.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 83305939 is about 9127.2087189896. The cubic root of 83305939 is about 436.7423648137.

The spelling of 83305939 in words is "eighty-three million, three hundred five thousand, nine hundred thirty-nine".