83994447 has 8 divisors (see below), whose sum is σ = 112169344. Its totient is φ = 55907928.

The previous prime is 83994439. The next prime is 83994451. The reversal of 83994447 is 74449938.

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

It is not a de Polignac number, because 83994447 - 2³ = 83994439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83994396 and 83994405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83994947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19843 + ... + 23700.

It is an arithmetic number, because the mean of its divisors is an integer number (14021168).

Almost surely, 2^83994447 is an apocalyptic number.

83994447 is a deficient number, since it is larger than the sum of its proper divisors (28174897).

83994447 is a wasteful number, since it uses less digits than its factorization.

83994447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44189.

The product of its digits is 870912, while the sum is 48.

The square root of 83994447 is about 9164.8484439188. The cubic root of 83994447 is about 437.9422631929.

The spelling of 83994447 in words is "eighty-three million, nine hundred ninety-four thousand, four hundred forty-seven".