777440099 has 2 divisors, whose sum is σ = 777440100. Its totient is φ = 777440098.

The previous prime is 777440087. The next prime is 777440123. The reversal of 777440099 is 990044777.

It is a weak prime.

It is an emirp because it is prime and its reverse (990044777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 777440099 - 2⁸ = 777439843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (777445099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388720049 + 388720050.

It is an arithmetic number, because the mean of its divisors is an integer number (388720050).

Almost surely, 2^777440099 is an apocalyptic number.

777440099 is a deficient number, since it is larger than the sum of its proper divisors (1).

777440099 is an equidigital number, since it uses as much as digits as its factorization.

777440099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 777440099 is about 27882.6128438495. The cubic root of 777440099 is about 919.5082828411.

The spelling of 777440099 in words is "seven hundred seventy-seven million, four hundred forty thousand, ninety-nine".