7922987 has 2 divisors, whose sum is σ = 7922988. Its totient is φ = 7922986.

The previous prime is 7922953. The next prime is 7923001. The reversal of 7922987 is 7892297.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7922987 - 2⁶ = 7922923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7922947) 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 as a sum of consecutive naturals, namely, 3961493 + 3961494.

It is an arithmetic number, because the mean of its divisors is an integer number (3961494).

Almost surely, 2^7922987 is an apocalyptic number.

7922987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7922987 is an equidigital number, since it uses as much as digits as its factorization.

7922987 is an odious number, because the sum of its binary digits is odd.

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

The square root of 7922987 is about 2814.7800979828. The cubic root of 7922987 is about 199.3561545393.

The spelling of 7922987 in words is "seven million, nine hundred twenty-two thousand, nine hundred eighty-seven".