8809145 has 16 divisors (see below), whose sum is σ = 11499408. Its totient is φ = 6451200.

The previous prime is 8809139. The next prime is 8809153. The reversal of 8809145 is 5419088.

8809145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 817216 + 7991929 = 904^2 + 2827^2 .

It is not a de Polignac number, because 8809145 - 2¹⁴ = 8792761 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1745 + ... + 4545.

It is an arithmetic number, because the mean of its divisors is an integer number (718713).

Almost surely, 2^8809145 is an apocalyptic number.

8809145 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8809145 is a deficient number, since it is larger than the sum of its proper divisors (2690263).

8809145 is a wasteful number, since it uses less digits than its factorization.

8809145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 8809145 is about 2968.0203840270. The cubic root of 8809145 is about 206.5275150113.

The spelling of 8809145 in words is "eight million, eight hundred nine thousand, one hundred forty-five".