85891417 has 4 divisors (see below), whose sum is σ = 88853220. Its totient is φ = 82929616.

The previous prime is 85891411. The next prime is 85891423. The reversal of 85891417 is 71419858.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (85891411) and next prime (85891423).

It can be written as a sum of positive squares in 2 ways, for example, as 27154521 + 58736896 = 5211^2 + 7664^2 .

It is a cyclic number.

It is not a de Polignac number, because 85891417 - 2¹¹ = 85889369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85891411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480858 + ... + 1480915.

It is an arithmetic number, because the mean of its divisors is an integer number (22213305).

Almost surely, 2^85891417 is an apocalyptic number.

It is an amenable number.

85891417 is a deficient number, since it is larger than the sum of its proper divisors (2961803).

85891417 is a wasteful number, since it uses less digits than its factorization.

85891417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961802.

The product of its digits is 80640, while the sum is 43.

The square root of 85891417 is about 9267.7622433897. The cubic root of 85891417 is about 441.2146482765.

The spelling of 85891417 in words is "eighty-five million, eight hundred ninety-one thousand, four hundred seventeen".