7739868991 has 2 divisors, whose sum is σ = 7739868992. Its totient is φ = 7739868990.

The previous prime is 7739868949. The next prime is 7739869031. The reversal of 7739868991 is 1998689377.

It is a strong prime.

It is an emirp because it is prime and its reverse (1998689377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7739868991 - 2⁷ = 7739868863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7739868901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3869934495 + 3869934496.

It is an arithmetic number, because the mean of its divisors is an integer number (3869934496).

Almost surely, 2^7739868991 is an apocalyptic number.

7739868991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7739868991 is an equidigital number, since it uses as much as digits as its factorization.

7739868991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41150592, while the sum is 67.

The square root of 7739868991 is about 87976.5252269036. The cubic root of 7739868991 is about 1978.0831183807.

The spelling of 7739868991 in words is "seven billion, seven hundred thirty-nine million, eight hundred sixty-eight thousand, nine hundred ninety-one".