83447133 has 64 divisors (see below), whose sum is σ = 147062784. Its totient is φ = 40824000.

The previous prime is 83447057. The next prime is 83447153. The reversal of 83447133 is 33174438.

It is not a de Polignac number, because 83447133 - 2¹⁴ = 83430749 is a prime.

It is a super-3 number, since 3×83447133³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 83447094 and 83447103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83447153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 307788 + ... + 308058.

It is an arithmetic number, because the mean of its divisors is an integer number (2297856).

Almost surely, 2^83447133 is an apocalyptic number.

It is an amenable number.

83447133 is a deficient number, since it is larger than the sum of its proper divisors (63615651).

83447133 is a wasteful number, since it uses less digits than its factorization.

83447133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its digits is 24192, while the sum is 33.

The square root of 83447133 is about 9134.9402296895. The cubic root of 83447133 is about 436.9889682627.

The spelling of 83447133 in words is "eighty-three million, four hundred forty-seven thousand, one hundred thirty-three".