299884378691 has 2 divisors, whose sum is σ = 299884378692. Its totient is φ = 299884378690.

The previous prime is 299884378679. The next prime is 299884378721. The reversal of 299884378691 is 196873488992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 299884378691 - 2³⁰ = 298810636867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (299884378601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149942189345 + 149942189346.

It is an arithmetic number, because the mean of its divisors is an integer number (149942189346).

Almost surely, 2^299884378691 is an apocalyptic number.

299884378691 is a deficient number, since it is larger than the sum of its proper divisors (1).

299884378691 is an equidigital number, since it uses as much as digits as its factorization.

299884378691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376233984, while the sum is 74.

The spelling of 299884378691 in words is "two hundred ninety-nine billion, eight hundred eighty-four million, three hundred seventy-eight thousand, six hundred ninety-one".