83140993 has 8 divisors (see below), whose sum is σ = 90330408. Its totient is φ = 76065024.

The previous prime is 83140991. The next prime is 83140997. The reversal of 83140993 is 39904138.

It can be written as a sum of positive squares in 4 ways, for example, as 5489649 + 77651344 = 2343^2 + 8812^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 83140993 - 2¹ = 83140991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83140991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26830 + ... + 29767.

It is an arithmetic number, because the mean of its divisors is an integer number (11291301).

Almost surely, 2^83140993 is an apocalyptic number.

It is an amenable number.

83140993 is a deficient number, since it is larger than the sum of its proper divisors (7189415).

83140993 is a wasteful number, since it uses less digits than its factorization.

83140993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56723.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 83140993 is about 9118.1682919323. The cubic root of 83140993 is about 436.4539239771.

The spelling of 83140993 in words is "eighty-three million, one hundred forty thousand, nine hundred ninety-three".