40406265 has 24 divisors (see below), whose sum is σ = 70237440. Its totient is φ = 21488544.

The previous prime is 40406167. The next prime is 40406273. The reversal of 40406265 is 56260404.

It is a happy number.

40406265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40406265 - 2⁷ = 40406137 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 17784 + ... + 19926.

It is an arithmetic number, because the mean of its divisors is an integer number (2926560).

Almost surely, 2^40406265 is an apocalyptic number.

40406265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40406265 is a deficient number, since it is larger than the sum of its proper divisors (29831175).

40406265 is a wasteful number, since it uses less digits than its factorization.

40406265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2570 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 40406265 is about 6356.5922474231. The cubic root of 40406265 is about 343.1491303563.

Adding to 40406265 its reverse (56260404), we get a palindrome (96666669).

The spelling of 40406265 in words is "forty million, four hundred six thousand, two hundred sixty-five".