8391132 has 36 divisors (see below), whose sum is σ = 22460256. Its totient is φ = 2632320.

The previous prime is 8391127. The next prime is 8391137. The reversal of 8391132 is 2311938.

It is an interprime number because it is at equal distance from previous prime (8391127) and next prime (8391137).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×8391132² = 140822192482848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8391096 and 8391105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8391137) 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, 6244 + ... + 7467.

It is an arithmetic number, because the mean of its divisors is an integer number (623896).

Almost surely, 2^8391132 is an apocalyptic number.

It is an amenable number.

8391132 is an abundant number, since it is smaller than the sum of its proper divisors (14069124).

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

8391132 is a wasteful number, since it uses less digits than its factorization.

8391132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13738 (or 13733 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 8391132 is about 2896.7450699017. The cubic root of 8391132 is about 203.2077112311.

The spelling of 8391132 in words is "eight million, three hundred ninety-one thousand, one hundred thirty-two".