8858661409 has 16 divisors (see below), whose sum is σ = 9818928000. Its totient is φ = 7941669120.

The previous prime is 8858661367. The next prime is 8858661437. The reversal of 8858661409 is 9041668588.

It is a cyclic number.

It is not a de Polignac number, because 8858661409 - 2¹⁷ = 8858530337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8858661409.

It is not an unprimeable number, because it can be changed into a prime (8858661109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9784 + ... + 133465.

It is an arithmetic number, because the mean of its divisors is an integer number (613683000).

Almost surely, 2^8858661409 is an apocalyptic number.

It is an amenable number.

8858661409 is a deficient number, since it is larger than the sum of its proper divisors (960266591).

8858661409 is a wasteful number, since it uses less digits than its factorization.

8858661409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143400.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The square root of 8858661409 is about 94120.4622226219. The cubic root of 8858661409 is about 2069.1375754231.

The spelling of 8858661409 in words is "eight billion, eight hundred fifty-eight million, six hundred sixty-one thousand, four hundred nine".