99846991 has 8 divisors (see below), whose sum is σ = 101394800. Its totient is φ = 98304192.

The previous prime is 99846947. The next prime is 99846997. The reversal of 99846991 is 19964899.

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 99846991 - 2⁷ = 99846863 is a prime.

It is a super-2 number, since 2×99846991² = 19938843223508162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99846997) 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, 63685 + ... + 65233.

It is an arithmetic number, because the mean of its divisors is an integer number (12674350).

Almost surely, 2^99846991 is an apocalyptic number.

99846991 is a deficient number, since it is larger than the sum of its proper divisors (1547809).

99846991 is a wasteful number, since it uses less digits than its factorization.

99846991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505.

The product of its digits is 1259712, while the sum is 55.

The square root of 99846991 is about 9992.3466212897. The cubic root of 99846991 is about 463.9220275613.

The spelling of 99846991 in words is "ninety-nine million, eight hundred forty-six thousand, nine hundred ninety-one".