85384791 has 12 divisors (see below), whose sum is σ = 123805968. Its totient is φ = 56705184.

The previous prime is 85384777. The next prime is 85384801. The reversal of 85384791 is 19748358.

It is not a de Polignac number, because 85384791 - 2¹⁸ = 85122647 is a prime.

It is a super-2 number, since 2×85384791² = 14581125068227362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85384751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15670 + ... + 20403.

It is an arithmetic number, because the mean of its divisors is an integer number (10317164).

Almost surely, 2^85384791 is an apocalyptic number.

85384791 is a deficient number, since it is larger than the sum of its proper divisors (38421177).

85384791 is a wasteful number, since it uses less digits than its factorization.

85384791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36342 (or 36339 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 85384791 is about 9240.3891151834. The cubic root of 85384791 is about 440.3454432538.

The spelling of 85384791 in words is "eighty-five million, three hundred eighty-four thousand, seven hundred ninety-one".