6884399939 has 2 divisors, whose sum is σ = 6884399940. Its totient is φ = 6884399938.

The previous prime is 6884399897. The next prime is 6884399947. The reversal of 6884399939 is 9399934886.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6884399939 is a prime.

It is not a weakly prime, because it can be changed into another prime (6884399959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442199969 + 3442199970.

It is an arithmetic number, because the mean of its divisors is an integer number (3442199970).

Almost surely, 2^6884399939 is an apocalyptic number.

6884399939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6884399939 is an equidigital number, since it uses as much as digits as its factorization.

6884399939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90699264, while the sum is 68.

The square root of 6884399939 is about 82972.2841616404. The cubic root of 6884399939 is about 1902.3424422938.

The spelling of 6884399939 in words is "six billion, eight hundred eighty-four million, three hundred ninety-nine thousand, nine hundred thirty-nine".