99995669 has 2 divisors, whose sum is σ = 99995670. Its totient is φ = 99995668.

The previous prime is 99995663. The next prime is 99995671. The reversal of 99995669 is 96659999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98208100 + 1787569 = 9910^2 + 1337^2 .

It is an emirp because it is prime and its reverse (96659999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99995669 is a prime.

It is a super-2 number, since 2×99995669² = 19998267637515122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 99995671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99995663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997834 + 49997835.

It is an arithmetic number, because the mean of its divisors is an integer number (49997835).

Almost surely, 2^99995669 is an apocalyptic number.

It is an amenable number.

99995669 is a deficient number, since it is larger than the sum of its proper divisors (1).

99995669 is an equidigital number, since it uses as much as digits as its factorization.

99995669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10628820, while the sum is 62.

The square root of 99995669 is about 9999.7834476553. The cubic root of 99995669 is about 464.1521823575.

The spelling of 99995669 in words is "ninety-nine million, nine hundred ninety-five thousand, six hundred sixty-nine".