86394791 has 6 divisors (see below), whose sum is σ = 100500120. Its totient is φ = 74052636.

The previous prime is 86394779. The next prime is 86394793. The reversal of 86394791 is 19749368.

It is not a de Polignac number, because 86394791 - 2¹⁰ = 86393767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86394793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 881531 + ... + 881628.

It is an arithmetic number, because the mean of its divisors is an integer number (16750020).

Almost surely, 2^86394791 is an apocalyptic number.

86394791 is a deficient number, since it is larger than the sum of its proper divisors (14105329).

86394791 is a wasteful number, since it uses less digits than its factorization.

86394791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763173 (or 1763166 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 86394791 is about 9294.8798270876. The cubic root of 86394791 is about 442.0748953434.

The spelling of 86394791 in words is "eighty-six million, three hundred ninety-four thousand, seven hundred ninety-one".