86229891 has 24 divisors (see below), whose sum is σ = 136611696. Its totient is φ = 51978240.

The previous prime is 86229889. The next prime is 86229893. The reversal of 86229891 is 19892268.

It is an interprime number because it is at equal distance from previous prime (86229889) and next prime (86229893).

It is not a de Polignac number, because 86229891 - 2¹ = 86229889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86229893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16851 + ... + 21363.

It is an arithmetic number, because the mean of its divisors is an integer number (5692154).

Almost surely, 2^86229891 is an apocalyptic number.

86229891 is a deficient number, since it is larger than the sum of its proper divisors (50381805).

86229891 is a wasteful number, since it uses less digits than its factorization.

86229891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723 (or 4720 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 86229891 is about 9286.0051152258. The cubic root of 86229891 is about 441.7934563879.

The spelling of 86229891 in words is "eighty-six million, two hundred twenty-nine thousand, eight hundred ninety-one".