83199138 has 32 divisors (see below), whose sum is σ = 191082240. Its totient is φ = 23884560.

The previous prime is 83199101. The next prime is 83199143.

It is a happy number.

83199138 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83199138.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31920 + ... + 34427.

It is an arithmetic number, because the mean of its divisors is an integer number (5971320).

Almost surely, 2^83199138 is an apocalyptic number.

83199138 is an abundant number, since it is smaller than the sum of its proper divisors (107883102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83199138 is a wasteful number, since it uses less digits than its factorization.

83199138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66382.

The product of its digits is 46656, while the sum is 42.

The square root of 83199138 is about 9121.3561491699. The cubic root of 83199138 is about 436.5556455579. Note that the first 3 decimals are identical.

The spelling of 83199138 in words is "eighty-three million, one hundred ninety-nine thousand, one hundred thirty-eight".