83196749 has 4 divisors (see below), whose sum is σ = 85225980. Its totient is φ = 81167520.

The previous prime is 83196739. The next prime is 83196761. The reversal of 83196749 is 94769138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94769138 = 2 ⋅47384569.

It can be written as a sum of positive squares in 2 ways, for example, as 7941124 + 75255625 = 2818^2 + 8675^2 .

It is a cyclic number.

It is not a de Polignac number, because 83196749 - 2⁴ = 83196733 is a prime.

It is a super-3 number, since 3×83196749³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83196709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014554 + ... + 1014635.

It is an arithmetic number, because the mean of its divisors is an integer number (21306495).

Almost surely, 2^83196749 is an apocalyptic number.

It is an amenable number.

83196749 is a deficient number, since it is larger than the sum of its proper divisors (2029231).

83196749 is a wasteful number, since it uses less digits than its factorization.

83196749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029230.

The product of its digits is 326592, while the sum is 47.

The square root of 83196749 is about 9121.2251918259. The cubic root of 83196749 is about 436.5514670634.

The spelling of 83196749 in words is "eighty-three million, one hundred ninety-six thousand, seven hundred forty-nine".