83219723 has 4 divisors (see below), whose sum is σ = 83529360. Its totient is φ = 82910088.

The previous prime is 83219713. The next prime is 83219737. The reversal of 83219723 is 32791238.

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

It is a cyclic number.

It is not a de Polignac number, because 83219723 - 2⁴ = 83219707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83219713) 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, 154415 + ... + 154952.

It is an arithmetic number, because the mean of its divisors is an integer number (20882340).

Almost surely, 2^83219723 is an apocalyptic number.

83219723 is a deficient number, since it is larger than the sum of its proper divisors (309637).

83219723 is a wasteful number, since it uses less digits than its factorization.

83219723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309636.

The product of its digits is 18144, while the sum is 35.

The square root of 83219723 is about 9122.4844751855. The cubic root of 83219723 is about 436.5916465596.

The spelling of 83219723 in words is "eighty-three million, two hundred nineteen thousand, seven hundred twenty-three".