83849966 has 4 divisors (see below), whose sum is σ = 125774952. Its totient is φ = 41924982.

The previous prime is 83849963. The next prime is 83849977. The reversal of 83849966 is 66994838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66994838 = 2 ⋅33497419.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83849963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20962490 + ... + 20962493.

It is an arithmetic number, because the mean of its divisors is an integer number (31443738).

Almost surely, 2^83849966 is an apocalyptic number.

83849966 is a deficient number, since it is larger than the sum of its proper divisors (41924986).

83849966 is a wasteful number, since it uses less digits than its factorization.

83849966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41924985.

The product of its digits is 2239488, while the sum is 53.

The square root of 83849966 is about 9156.9627060505. The cubic root of 83849966 is about 437.6910138423.

The spelling of 83849966 in words is "eighty-three million, eight hundred forty-nine thousand, nine hundred sixty-six".