85871417 has 4 divisors (see below), whose sum is σ = 86527056. Its totient is φ = 85215780.

The previous prime is 85871411. The next prime is 85871419. The reversal of 85871417 is 71417858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71417858 = 2 ⋅35708929.

It is a cyclic number.

It is not a de Polignac number, because 85871417 - 2⁶ = 85871353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85871411) 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, 327623 + ... + 327884.

It is an arithmetic number, because the mean of its divisors is an integer number (21631764).

Almost surely, 2^85871417 is an apocalyptic number.

It is an amenable number.

85871417 is a deficient number, since it is larger than the sum of its proper divisors (655639).

85871417 is a wasteful number, since it uses less digits than its factorization.

85871417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655638.

The product of its digits is 62720, while the sum is 41.

The square root of 85871417 is about 9266.6831714481. The cubic root of 85871417 is about 441.1803996935.

The spelling of 85871417 in words is "eighty-five million, eight hundred seventy-one thousand, four hundred seventeen".