8898409 has 4 divisors (see below), whose sum is σ = 9582916. Its totient is φ = 8213904.

The previous prime is 8898391. The next prime is 8898419. The reversal of 8898409 is 9048988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3790809 + 5107600 = 1947^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 8898409 - 2¹¹ = 8896361 is a prime.

It is a Duffinian number.

8898409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8898419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342234 + ... + 342259.

It is an arithmetic number, because the mean of its divisors is an integer number (2395729).

Almost surely, 2^8898409 is an apocalyptic number.

It is an amenable number.

8898409 is a deficient number, since it is larger than the sum of its proper divisors (684507).

8898409 is a wasteful number, since it uses less digits than its factorization.

8898409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684506.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 8898409 is about 2983.0201139114. The cubic root of 8898409 is about 207.2227603412. Note that the first 3 decimals are identical.

The spelling of 8898409 in words is "eight million, eight hundred ninety-eight thousand, four hundred nine".