83420823 has 8 divisors (see below), whose sum is σ = 112751728. Its totient is φ = 54851904.

The previous prime is 83420809. The next prime is 83420837. The reversal of 83420823 is 32802438.

It is an interprime number because it is at equal distance from previous prime (83420809) and next prime (83420837).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83420823 - 2⁸ = 83420567 is a prime.

It is the 9134-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83420863) by changing a digit.

It is a nontrivial repunit in base 9133.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190240 + ... + 190677.

It is an arithmetic number, because the mean of its divisors is an integer number (14093966).

Almost surely, 2^83420823 is an apocalyptic number.

83420823 is a deficient number, since it is larger than the sum of its proper divisors (29330905).

83420823 is a wasteful number, since it uses less digits than its factorization.

83420823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380993.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 83420823 is about 9133.5000410576. The cubic root of 83420823 is about 436.9430374325.

The spelling of 83420823 in words is "eighty-three million, four hundred twenty thousand, eight hundred twenty-three".