9089861 has 4 divisors (see below), whose sum is σ = 9916224. Its totient is φ = 8263500.

The previous prime is 9089831. The next prime is 9089863. The reversal of 9089861 is 1689809.

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 a cyclic number.

It is not a de Polignac number, because 9089861 - 2¹⁰ = 9088837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9089863) 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, 413165 + ... + 413186.

It is an arithmetic number, because the mean of its divisors is an integer number (2479056).

Almost surely, 2^9089861 is an apocalyptic number.

It is an amenable number.

9089861 is a deficient number, since it is larger than the sum of its proper divisors (826363).

9089861 is a wasteful number, since it uses less digits than its factorization.

9089861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826362.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 9089861 is about 3014.9396345532. The cubic root of 9089861 is about 208.6983813470.

The spelling of 9089861 in words is "nine million, eighty-nine thousand, eight hundred sixty-one".