8409881 has 8 divisors (see below), whose sum is σ = 8942400. Its totient is φ = 7891312.

The previous prime is 8409871. The next prime is 8409889. The reversal of 8409881 is 1889048.

8409881 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 8409881 - 2²² = 4215577 is a prime.

It is a super-2 number, since 2×8409881² = 141452196868322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8409889) 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, 2231 + ... + 4668.

It is an arithmetic number, because the mean of its divisors is an integer number (1117800).

Almost surely, 2^8409881 is an apocalyptic number.

It is an amenable number.

8409881 is a deficient number, since it is larger than the sum of its proper divisors (532519).

8409881 is a wasteful number, since it uses less digits than its factorization.

8409881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6975.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 8409881 is about 2899.9794826860. The cubic root of 8409881 is about 203.3589465779.

The spelling of 8409881 in words is "eight million, four hundred nine thousand, eight hundred eighty-one".