89406409 has 4 divisors (see below), whose sum is σ = 89797060. Its totient is φ = 89015760.

The previous prime is 89406379. The next prime is 89406413. The reversal of 89406409 is 90460498.

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 47997184 + 41409225 = 6928^2 + 6435^2 .

It is a cyclic number.

It is not a de Polignac number, because 89406409 - 2⁵ = 89406377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89406439) 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, 194982 + ... + 195439.

It is an arithmetic number, because the mean of its divisors is an integer number (22449265).

Almost surely, 2^89406409 is an apocalyptic number.

It is an amenable number.

89406409 is a deficient number, since it is larger than the sum of its proper divisors (390651).

89406409 is a wasteful number, since it uses less digits than its factorization.

89406409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390650.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 89406409 is about 9455.4962323508. The cubic root of 89406409 is about 447.1530704757.

The spelling of 89406409 in words is "eighty-nine million, four hundred six thousand, four hundred nine".