6929987 has 2 divisors, whose sum is σ = 6929988. Its totient is φ = 6929986.

The previous prime is 6929983. The next prime is 6930023. The reversal of 6929987 is 7899296.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6929987 - 2² = 6929983 is a prime.

It is not a weakly prime, because it can be changed into another prime (6929981) 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, 3464993 + 3464994.

It is an arithmetic number, because the mean of its divisors is an integer number (3464994).

Almost surely, 2^6929987 is an apocalyptic number.

6929987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6929987 is an equidigital number, since it uses as much as digits as its factorization.

6929987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 6929987 is about 2632.4868470707. The cubic root of 6929987 is about 190.6532179673.

The spelling of 6929987 in words is "six million, nine hundred twenty-nine thousand, nine hundred eighty-seven".