77000999 has 2 divisors, whose sum is σ = 77001000. Its totient is φ = 77000998.

The previous prime is 77000953. The next prime is 77001013. The reversal of 77000999 is 99900077.

It is a strong prime.

It is an emirp because it is prime and its reverse (99900077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77000999 - 2¹² = 76996903 is a prime.

It is a Sophie Germain prime.

77000999 is a modest number, since divided by 999 gives 77 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77000699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38500499 + 38500500.

It is an arithmetic number, because the mean of its divisors is an integer number (38500500).

Almost surely, 2^77000999 is an apocalyptic number.

77000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

77000999 is an equidigital number, since it uses as much as digits as its factorization.

77000999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 77000999 is about 8775.0213105154. The cubic root of 77000999 is about 425.4339263592.

The spelling of 77000999 in words is "seventy-seven million, nine hundred ninety-nine", and thus it is an aban number.