99911069 has 2 divisors, whose sum is σ = 99911070. Its totient is φ = 99911068.

The previous prime is 99911051. The next prime is 99911081. The reversal of 99911069 is 96011999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90535225 + 9375844 = 9515^2 + 3062^2 .

It is a cyclic number.

It is not a de Polignac number, because 99911069 - 2⁸ = 99910813 is a prime.

It is a super-2 number, since 2×99911069² = 19964443417445522, 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 (99911029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49955534 + 49955535.

It is an arithmetic number, because the mean of its divisors is an integer number (49955535).

Almost surely, 2^99911069 is an apocalyptic number.

It is an amenable number.

99911069 is a deficient number, since it is larger than the sum of its proper divisors (1).

99911069 is an equidigital number, since it uses as much as digits as its factorization.

99911069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 99911069 is about 9995.5524609698. The cubic root of 99911069 is about 464.0212488411.

The spelling of 99911069 in words is "ninety-nine million, nine hundred eleven thousand, sixty-nine".