9099861 has 8 divisors (see below), whose sum is σ = 12258624. Its totient is φ = 6003840.

The previous prime is 9099847. The next prime is 9099863. The reversal of 9099861 is 1689909.

9099861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9099861 - 2⁵ = 9099829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9099863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15345 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (1532328).

Almost surely, 2^9099861 is an apocalyptic number.

It is an amenable number.

9099861 is a deficient number, since it is larger than the sum of its proper divisors (3158763).

9099861 is a wasteful number, since it uses less digits than its factorization.

9099861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31371.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 9099861 is about 3016.5975866860. The cubic root of 9099861 is about 208.7748848625.

The spelling of 9099861 in words is "nine million, ninety-nine thousand, eight hundred sixty-one".