99911667 has 16 divisors (see below), whose sum is σ = 139069440. Its totient is φ = 63729600.

The previous prime is 99911663. The next prime is 99911687. The reversal of 99911667 is 76611999.

It is not a de Polignac number, because 99911667 - 2² = 99911663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99911663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2242 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (8691840).

Almost surely, 2^99911667 is an apocalyptic number.

99911667 is a deficient number, since it is larger than the sum of its proper divisors (39157773).

99911667 is a wasteful number, since it uses less digits than its factorization.

99911667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194.

The product of its digits is 183708, while the sum is 48.

The square root of 99911667 is about 9995.5823742291. The cubic root of 99911667 is about 464.0221746116.

The spelling of 99911667 in words is "ninety-nine million, nine hundred eleven thousand, six hundred sixty-seven".