89209405 has 8 divisors (see below), whose sum is σ = 109944792. Its totient is φ = 69438528.

The previous prime is 89209403. The next prime is 89209447. The reversal of 89209405 is 50490298.

It can be written as a sum of positive squares in 4 ways, for example, as 14092516 + 75116889 = 3754^2 + 8667^2 .

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 89209405 - 2¹ = 89209403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89209403) 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, 240922 + ... + 241291.

It is an arithmetic number, because the mean of its divisors is an integer number (13743099).

Almost surely, 2^89209405 is an apocalyptic number.

It is an amenable number.

89209405 is a deficient number, since it is larger than the sum of its proper divisors (20735387).

89209405 is a wasteful number, since it uses less digits than its factorization.

89209405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482255.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 89209405 is about 9445.0730542437. The cubic root of 89209405 is about 446.8244000608.

The spelling of 89209405 in words is "eighty-nine million, two hundred nine thousand, four hundred five".