40449085 has 4 divisors (see below), whose sum is σ = 48538908. Its totient is φ = 32359264.

The previous prime is 40449061. The next prime is 40449089. The reversal of 40449085 is 58094404.

40449085 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 13388281 + 27060804 = 3659^2 + 5202^2 .

It is a cyclic number.

It is not a de Polignac number, because 40449085 - 2⁵ = 40449053 is a prime.

It is a super-2 number, since 2×40449085² = 3272256954674450, which contains 22 as substring.

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 40449085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40449089) by changing a digit.

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, 4044904 + ... + 4044913.

It is an arithmetic number, because the mean of its divisors is an integer number (12134727).

Almost surely, 2^40449085 is an apocalyptic number.

It is an amenable number.

40449085 is a deficient number, since it is larger than the sum of its proper divisors (8089823).

40449085 is an equidigital number, since it uses as much as digits as its factorization.

40449085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8089822.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 40449085 is about 6359.9595124497. The cubic root of 40449085 is about 343.2703034660.

The spelling of 40449085 in words is "forty million, four hundred forty-nine thousand, eighty-five".