94128817 has 4 divisors (see below), whose sum is σ = 94159476. Its totient is φ = 94098160.

The previous prime is 94128773. The next prime is 94128829. The reversal of 94128817 is 71882149.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34468641 + 59660176 = 5871^2 + 7724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94128817 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94128817.

It is not an unprimeable number, because it can be changed into a prime (94128017) 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 3 ways as a sum of consecutive naturals, for example, 10138 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (23539869).

Almost surely, 2^94128817 is an apocalyptic number.

It is an amenable number.

94128817 is a deficient number, since it is larger than the sum of its proper divisors (30659).

94128817 is a wasteful number, since it uses less digits than its factorization.

94128817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30658.

The product of its digits is 32256, while the sum is 40.

The square root of 94128817 is about 9702.0006699649. Note that the first 3 decimals coincide. The cubic root of 94128817 is about 454.8911980721.

The spelling of 94128817 in words is "ninety-four million, one hundred twenty-eight thousand, eight hundred seventeen".