7976987 has 2 divisors, whose sum is σ = 7976988. Its totient is φ = 7976986.

The previous prime is 7976971. The next prime is 7976993. The reversal of 7976987 is 7896797.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7976987 - 2⁴ = 7976971 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 7² + 9³ + 7³ + 6⁸ + 9⁶ + 8 + 7⁸ .

It is not a weakly prime, because it can be changed into another prime (7970987) 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, 3988493 + 3988494.

It is an arithmetic number, because the mean of its divisors is an integer number (3988494).

Almost surely, 2^7976987 is an apocalyptic number.

7976987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7976987 is an equidigital number, since it uses as much as digits as its factorization.

7976987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 53.

The square root of 7976987 is about 2824.3560327976. The cubic root of 7976987 is about 199.8080408173.

The spelling of 7976987 in words is "seven million, nine hundred seventy-six thousand, nine hundred eighty-seven".