89809345 has 16 divisors (see below), whose sum is σ = 109890000. Its totient is φ = 70447104.

The previous prime is 89809337. The next prime is 89809361. The reversal of 89809345 is 54390898.

It can be written as a sum of positive squares in 8 ways, for example, as 5022081 + 84787264 = 2241^2 + 9208^2 .

It is a cyclic number.

It is not a de Polignac number, because 89809345 - 2³ = 89809337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89809295 and 89809304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71281 + ... + 72529.

It is an arithmetic number, because the mean of its divisors is an integer number (6868125).

Almost surely, 2^89809345 is an apocalyptic number.

It is an amenable number.

89809345 is a deficient number, since it is larger than the sum of its proper divisors (20080655).

89809345 is a wasteful number, since it uses less digits than its factorization.

89809345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 89809345 is about 9476.7792524676. The cubic root of 89809345 is about 447.8238056736.

The spelling of 89809345 in words is "eighty-nine million, eight hundred nine thousand, three hundred forty-five".