85919471 has 8 divisors (see below), whose sum is σ = 93990144. Its totient is φ = 77892120.

The previous prime is 85919459. The next prime is 85919503. The reversal of 85919471 is 17491958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85919471 - 2¹⁴ = 85903087 is a prime.

It is a super-3 number, since 3×85919471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85919441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6605 + ... + 14678.

It is an arithmetic number, because the mean of its divisors is an integer number (11748768).

Almost surely, 2^85919471 is an apocalyptic number.

85919471 is a deficient number, since it is larger than the sum of its proper divisors (8070673).

85919471 is a wasteful number, since it uses less digits than its factorization.

85919471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21661.

The product of its digits is 90720, while the sum is 44.

The square root of 85919471 is about 9269.2756459175. The cubic root of 85919471 is about 441.2626798059.

The spelling of 85919471 in words is "eighty-five million, nine hundred nineteen thousand, four hundred seventy-one".