8188442 has 4 divisors (see below), whose sum is σ = 12282666. Its totient is φ = 4094220.

The previous prime is 8188423. The next prime is 8188451. The reversal of 8188442 is 2448818.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4879681 + 3308761 = 2209^2 + 1819^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2047109 + ... + 2047112.

Almost surely, 2^8188442 is an apocalyptic number.

8188442 is a deficient number, since it is larger than the sum of its proper divisors (4094224).

8188442 is a wasteful number, since it uses less digits than its factorization.

8188442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094223.

The product of its digits is 16384, while the sum is 35.

The square root of 8188442 is about 2861.5453866748. The cubic root of 8188442 is about 201.5581788670.

The spelling of 8188442 in words is "eight million, one hundred eighty-eight thousand, four hundred forty-two".