89605889 has 4 divisors (see below), whose sum is σ = 91074900. Its totient is φ = 88136880.

The previous prime is 89605883. The next prime is 89605909. The reversal of 89605889 is 98850698.

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 44782864 + 44823025 = 6692^2 + 6695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89605889 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 89605889.

It is not an unprimeable number, because it can be changed into a prime (89605883) 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, 734414 + ... + 734535.

It is an arithmetic number, because the mean of its divisors is an integer number (22768725).

Almost surely, 2^89605889 is an apocalyptic number.

It is an amenable number.

89605889 is a deficient number, since it is larger than the sum of its proper divisors (1469011).

89605889 is a wasteful number, since it uses less digits than its factorization.

89605889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469010.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 89605889 is about 9466.0387174361. The cubic root of 89605889 is about 447.4853801285.

The spelling of 89605889 in words is "eighty-nine million, six hundred five thousand, eight hundred eighty-nine".