91434 has 24 divisors (see below), whose sum is σ = 213408. Its totient is φ = 26040.

The previous prime is 91433. The next prime is 91453. The reversal of 91434 is 43419.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 91434.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91434.

It is not an unprimeable number, because it can be changed into a prime (91433) 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, 139 + ... + 449.

It is an arithmetic number, because the mean of its divisors is an integer number (8892).

2⁹¹⁴³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106704).

91434 is an abundant number, since it is smaller than the sum of its proper divisors (121974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91434 is a wasteful number, since it uses less digits than its factorization.

91434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 323 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 91434 is about 302.3805549304. The cubic root of 91434 is about 45.0508068130.

It can be divided in two parts, 91 and 434, that added together give a palindrome (525).

The spelling of 91434 in words is "ninety-one thousand, four hundred thirty-four".