99011261 has 8 divisors (see below), whose sum is σ = 106189920. Its totient is φ = 92029392.

The previous prime is 99011243. The next prime is 99011279. The reversal of 99011261 is 16211099.

It is an interprime number because it is at equal distance from previous prime (99011243) and next prime (99011279).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99011261 - 2⁶ = 99011197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99011221) 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 7 ways as a sum of consecutive naturals, for example, 48155 + ... + 50168.

It is an arithmetic number, because the mean of its divisors is an integer number (13273740).

Almost surely, 2^99011261 is an apocalyptic number.

It is an amenable number.

99011261 is a deficient number, since it is larger than the sum of its proper divisors (7178659).

99011261 is a wasteful number, since it uses less digits than its factorization.

99011261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98395.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 99011261 is about 9950.4402415170. The cubic root of 99011261 is about 462.6240403604.

The spelling of 99011261 in words is "ninety-nine million, eleven thousand, two hundred sixty-one".