8143992 has 24 divisors (see below), whose sum is σ = 22056840. Its totient is φ = 2714640.

The previous prime is 8143987. The next prime is 8143997. The reversal of 8143992 is 2993418.

It is an interprime number because it is at equal distance from previous prime (8143987) and next prime (8143997).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8143997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56484 + ... + 56627.

It is an arithmetic number, because the mean of its divisors is an integer number (919035).

Almost surely, 2^8143992 is an apocalyptic number.

It is an amenable number.

8143992 is an abundant number, since it is smaller than the sum of its proper divisors (13912848).

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

8143992 is a wasteful number, since it uses less digits than its factorization.

8143992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113123 (or 113116 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 8143992 is about 2853.7680354226. The cubic root of 8143992 is about 201.1928052687.

The spelling of 8143992 in words is "eight million, one hundred forty-three thousand, nine hundred ninety-two".