9785881 has 4 divisors (see below), whose sum is σ = 11183872. Its totient is φ = 8387892.

The previous prime is 9785851. The next prime is 9785887. The reversal of 9785881 is 1885879.

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 9785881 - 2⁵ = 9785849 is a prime.

It is a super-2 number, since 2×9785881² = 191526933892322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9785887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698985 + ... + 698998.

It is an arithmetic number, because the mean of its divisors is an integer number (2795968).

Almost surely, 2^9785881 is an apocalyptic number.

It is an amenable number.

9785881 is a deficient number, since it is larger than the sum of its proper divisors (1397991).

9785881 is a wasteful number, since it uses less digits than its factorization.

9785881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397990.

The product of its digits is 161280, while the sum is 46.

The square root of 9785881 is about 3128.2392811292. The cubic root of 9785881 is about 213.8946769696.

It can be divided in two parts, 978 and 5881, that added together give a cube (6859 = 19³).

The spelling of 9785881 in words is "nine million, seven hundred eighty-five thousand, eight hundred eighty-one".