7987922 has 8 divisors (see below), whose sum is σ = 12069756. Its totient is φ = 3964672.

The previous prime is 7987921. The next prime is 7987957. The reversal of 7987922 is 2297897.

It can be written as a sum of positive squares in 2 ways, for example, as 7349521 + 638401 = 2711^2 + 799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7987921) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14303 + ... + 14850.

Almost surely, 2^7987922 is an apocalyptic number.

7987922 is a deficient number, since it is larger than the sum of its proper divisors (4081834).

7987922 is a wasteful number, since it uses less digits than its factorization.

7987922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29292.

The product of its digits is 127008, while the sum is 44.

The square root of 7987922 is about 2826.2912093413. The cubic root of 7987922 is about 199.8992993054.

The spelling of 7987922 in words is "seven million, nine hundred eighty-seven thousand, nine hundred twenty-two".