40481365 has 4 divisors (see below), whose sum is σ = 48577644. Its totient is φ = 32385088.

The previous prime is 40481321. The next prime is 40481393. The reversal of 40481365 is 56318404.

It is a happy number.

40481365 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 15421329 + 25060036 = 3927^2 + 5006^2 .

It is a cyclic number.

It is not a de Polignac number, because 40481365 - 2¹⁷ = 40350293 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, 4048132 + ... + 4048141.

It is an arithmetic number, because the mean of its divisors is an integer number (12144411).

Almost surely, 2^40481365 is an apocalyptic number.

It is an amenable number.

40481365 is a deficient number, since it is larger than the sum of its proper divisors (8096279).

40481365 is an equidigital number, since it uses as much as digits as its factorization.

40481365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8096278.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 40481365 is about 6362.4967583489. The cubic root of 40481365 is about 343.3615936981.

Adding to 40481365 its reverse (56318404), we get a palindrome (96799769).

The spelling of 40481365 in words is "forty million, four hundred eighty-one thousand, three hundred sixty-five".