40489165 has 4 divisors (see below), whose sum is σ = 48587004. Its totient is φ = 32391328.

The previous prime is 40489151. The next prime is 40489199. The reversal of 40489165 is 56198404.

It is a happy number.

40489165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5098564 + 35390601 = 2258^2 + 5949^2 .

It is a cyclic number.

It is not a de Polignac number, because 40489165 - 2⁹ = 40488653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4048912 + ... + 4048921.

It is an arithmetic number, because the mean of its divisors is an integer number (12146751).

Almost surely, 2^40489165 is an apocalyptic number.

It is an amenable number.

40489165 is a deficient number, since it is larger than the sum of its proper divisors (8097839).

40489165 is an equidigital number, since it uses as much as digits as its factorization.

40489165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8097838.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 40489165 is about 6363.1096957384. The cubic root of 40489165 is about 343.3836453955.

The spelling of 40489165 in words is "forty million, four hundred eighty-nine thousand, one hundred sixty-five".