89519805 has 12 divisors (see below), whose sum is σ = 155167740. Its totient is φ = 47743872.

The previous prime is 89519797. The next prime is 89519821. The reversal of 89519805 is 50891598.

It can be written as a sum of positive squares in 2 ways, for example, as 46826649 + 42693156 = 6843^2 + 6534^2 .

It is not a de Polignac number, because 89519805 - 2³ = 89519797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1989329 = 89519805 / (8 + 9 + 5 + 1 + 9 + 8 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 994620 + ... + 994709.

It is an arithmetic number, because the mean of its divisors is an integer number (12930645).

Almost surely, 2^89519805 is an apocalyptic number.

It is an amenable number.

89519805 is a deficient number, since it is larger than the sum of its proper divisors (65647935).

89519805 is a wasteful number, since it uses less digits than its factorization.

89519805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989340 (or 1989337 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 89519805 is about 9461.4906330874. The cubic root of 89519805 is about 447.3420351086.

The spelling of 89519805 in words is "eighty-nine million, five hundred nineteen thousand, eight hundred five".