9901099 has 4 divisors (see below), whose sum is σ = 10662736. Its totient is φ = 9139464.

The previous prime is 9901097. The next prime is 9901103.

9901099 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9901099 - 2¹ = 9901097 is a prime.

It is a super-2 number, since 2×9901099² = 196063522815602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380799 + ... + 380824.

It is an arithmetic number, because the mean of its divisors is an integer number (2665684).

Almost surely, 2^9901099 is an apocalyptic number.

9901099 is a deficient number, since it is larger than the sum of its proper divisors (761637).

9901099 is a wasteful number, since it uses less digits than its factorization.

9901099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761636.

The product of its (nonzero) digits is 6561, while the sum is 37.

The square root of 9901099 is about 3146.6011822282. The cubic root of 9901099 is about 214.7308620788.

The spelling of 9901099 in words is "nine million, nine hundred one thousand, ninety-nine".