99999077 has 2 divisors, whose sum is σ = 99999078. Its totient is φ = 99999076.

The previous prime is 99999073. The next prime is 99999079. The reversal of 99999077 is 77099999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93103201 + 6895876 = 9649^2 + 2626^2 .

It is an emirp because it is prime and its reverse (77099999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99999077 - 2² = 99999073 is a prime.

Together with 99999079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999538 + 49999539.

It is an arithmetic number, because the mean of its divisors is an integer number (49999539).

Almost surely, 2^99999077 is an apocalyptic number.

It is an amenable number.

99999077 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999077 is an equidigital number, since it uses as much as digits as its factorization.

99999077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2893401, while the sum is 59.

The square root of 99999077 is about 9999.9538498935. The cubic root of 99999077 is about 464.1574552947.

The spelling of 99999077 in words is "ninety-nine million, nine hundred ninety-nine thousand, seventy-seven".