7966694399 has 2 divisors, whose sum is σ = 7966694400. Its totient is φ = 7966694398.

The previous prime is 7966694389. The next prime is 7966694423. The reversal of 7966694399 is 9934966697.

It is a weak prime.

It is an emirp because it is prime and its reverse (9934966697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7966694399 - 2⁴ = 7966694383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7966694339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3983347199 + 3983347200.

It is an arithmetic number, because the mean of its divisors is an integer number (3983347200).

Almost surely, 2^7966694399 is an apocalyptic number.

7966694399 is a deficient number, since it is larger than the sum of its proper divisors (1).

7966694399 is an equidigital number, since it uses as much as digits as its factorization.

7966694399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119042784, while the sum is 68.

The square root of 7966694399 is about 89256.3409456157. The cubic root of 7966694399 is about 1997.2206727090.

The spelling of 7966694399 in words is "seven billion, nine hundred sixty-six million, six hundred ninety-four thousand, three hundred ninety-nine".