9099561 has 4 divisors (see below), whose sum is σ = 12132752. Its totient is φ = 6066372.

The previous prime is 9099547. The next prime is 9099583. The reversal of 9099561 is 1659909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9099561 - 2¹⁸ = 8837417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9099161) 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, 1516591 + ... + 1516596.

It is an arithmetic number, because the mean of its divisors is an integer number (3033188).

Almost surely, 2^9099561 is an apocalyptic number.

It is an amenable number.

9099561 is a deficient number, since it is larger than the sum of its proper divisors (3033191).

9099561 is a wasteful number, since it uses less digits than its factorization.

9099561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033190.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 9099561 is about 3016.5478613806. The cubic root of 9099561 is about 208.7725905728.

The spelling of 9099561 in words is "nine million, ninety-nine thousand, five hundred sixty-one".