999999996277 has 2 divisors, whose sum is σ = 999999996278. Its totient is φ = 999999996276.

The previous prime is 999999996223. The next prime is 999999996311. The reversal of 999999996277 is 772699999999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 985242848836 + 14757147441 = 992594^2 + 121479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999999996277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999999996977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999998138 + 499999998139.

It is an arithmetic number, because the mean of its divisors is an integer number (499999998139).

Almost surely, 2^999999996277 is an apocalyptic number.

It is an amenable number.

999999996277 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999996277 is an equidigital number, since it uses as much as digits as its factorization.

999999996277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25311471948, while the sum is 94.

The spelling of 999999996277 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-six thousand, two hundred seventy-seven".