83423813 has 24 divisors (see below), whose sum is σ = 97611360. Its totient is φ = 71042400.

The previous prime is 83423771. The next prime is 83423819. The reversal of 83423813 is 31832438.

It is a happy number.

It is not a de Polignac number, because 83423813 - 2¹⁰ = 83422789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83423813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83423819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301031 + ... + 301307.

It is an arithmetic number, because the mean of its divisors is an integer number (4067140).

Almost surely, 2^83423813 is an apocalyptic number.

It is an amenable number.

83423813 is a deficient number, since it is larger than the sum of its proper divisors (14187547).

83423813 is a wasteful number, since it uses less digits than its factorization.

83423813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 438 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 83423813 is about 9133.6637227347. The cubic root of 83423813 is about 436.9482577281.

The spelling of 83423813 in words is "eighty-three million, four hundred twenty-three thousand, eight hundred thirteen".