99000643 has 8 divisors (see below), whose sum is σ = 115061760. Its totient is φ = 83419080.

The previous prime is 99000619. The next prime is 99000647. The reversal of 99000643 is 34600099.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99000643 is a prime.

It is a super-2 number, since 2×99000643² = 19602254628826898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99000647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119443 + ... + 120268.

It is an arithmetic number, because the mean of its divisors is an integer number (14382720).

Almost surely, 2^99000643 is an apocalyptic number.

99000643 is a deficient number, since it is larger than the sum of its proper divisors (16061117).

99000643 is a wasteful number, since it uses less digits than its factorization.

99000643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239777.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 99000643 is about 9949.9066829795. The cubic root of 99000643 is about 462.6075024514.

The spelling of 99000643 in words is "ninety-nine million, six hundred forty-three", and thus it is an aban number.