99776669 has 2 divisors, whose sum is σ = 99776670. Its totient is φ = 99776668.

The previous prime is 99776659. The next prime is 99776711. The reversal of 99776669 is 96667799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99400900 + 375769 = 9970^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 99776669 - 2¹² = 99772573 is a prime.

It is a super-2 number, since 2×99776669² = 19910767353471122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99776609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49888334 + 49888335.

It is an arithmetic number, because the mean of its divisors is an integer number (49888335).

Almost surely, 2^99776669 is an apocalyptic number.

It is an amenable number.

99776669 is a deficient number, since it is larger than the sum of its proper divisors (1).

99776669 is an equidigital number, since it uses as much as digits as its factorization.

99776669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7715736, while the sum is 59.

The square root of 99776669 is about 9988.8272084364. The cubic root of 99776669 is about 463.8130889194.

The spelling of 99776669 in words is "ninety-nine million, seven hundred seventy-six thousand, six hundred sixty-nine".