83506739 has 4 divisors (see below), whose sum is σ = 83743656. Its totient is φ = 83269824.

The previous prime is 83506711. The next prime is 83506751. The reversal of 83506739 is 93760538.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83506739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83506696 and 83506705.

It is not an unprimeable number, because it can be changed into a prime (83506769) 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, 117929 + ... + 118634.

It is an arithmetic number, because the mean of its divisors is an integer number (20935914).

Almost surely, 2^83506739 is an apocalyptic number.

83506739 is a deficient number, since it is larger than the sum of its proper divisors (236917).

83506739 is a wasteful number, since it uses less digits than its factorization.

83506739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236916.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 83506739 is about 9138.2021754829. The cubic root of 83506739 is about 437.0929900713.

The spelling of 83506739 in words is "eighty-three million, five hundred six thousand, seven hundred thirty-nine".