991452 has 96 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 241920.

The previous prime is 991447. The next prime is 991453. The reversal of 991452 is 254199.

It is a happy number.

991452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26778 + ... + 26814.

It is an arithmetic number, because the mean of its divisors is an integer number (31920).

2⁹⁹¹⁴⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 991452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532160).

991452 is an abundant number, since it is smaller than the sum of its proper divisors (2072868).

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

991452 is a wasteful number, since it uses less digits than its factorization.

991452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 89 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 991452 is about 995.7168272154. The cubic root of 991452 is about 99.7142509190.

It can be divided in two parts, 99 and 1452, that added together give a palindrome (1551).

The spelling of 991452 in words is "nine hundred ninety-one thousand, four hundred fifty-two".