94891609 has 2 divisors, whose sum is σ = 94891610. Its totient is φ = 94891608.

The previous prime is 94891607. The next prime is 94891627. The reversal of 94891609 is 90619849.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66504025 + 28387584 = 8155^2 + 5328^2 .

It is a cyclic number.

It is not a de Polignac number, because 94891609 - 2¹ = 94891607 is a prime.

It is a super-3 number, since 3×94891609³ (a number of 25 digits) contains 333 as substring.

Together with 94891607, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (94891607) 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 as a sum of consecutive naturals, namely, 47445804 + 47445805.

It is an arithmetic number, because the mean of its divisors is an integer number (47445805).

Almost surely, 2^94891609 is an apocalyptic number.

It is an amenable number.

94891609 is a deficient number, since it is larger than the sum of its proper divisors (1).

94891609 is an equidigital number, since it uses as much as digits as its factorization.

94891609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 94891609 is about 9741.2324168967. The cubic root of 94891609 is about 456.1166615049.

The spelling of 94891609 in words is "ninety-four million, eight hundred ninety-one thousand, six hundred nine".