89609399 has 4 divisors (see below), whose sum is σ = 97755720. Its totient is φ = 81463080.

The previous prime is 89609393. The next prime is 89609411. The reversal of 89609399 is 99390698.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89609399 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 89609399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89609393) 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, 4073144 + ... + 4073165.

It is an arithmetic number, because the mean of its divisors is an integer number (24438930).

Almost surely, 2^89609399 is an apocalyptic number.

89609399 is a deficient number, since it is larger than the sum of its proper divisors (8146321).

89609399 is a wasteful number, since it uses less digits than its factorization.

89609399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146320.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 89609399 is about 9466.2241152426. The cubic root of 89609399 is about 447.4912229482.

The spelling of 89609399 in words is "eighty-nine million, six hundred nine thousand, three hundred ninety-nine".