40489855 has 16 divisors (see below), whose sum is σ = 58452480. Its totient is φ = 26302752.

The previous prime is 40489853. The next prime is 40489859. The reversal of 40489855 is 55898404.

It is a happy number.

It is not a de Polignac number, because 40489855 - 2¹ = 40489853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40489853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29779 + ... + 31108.

It is an arithmetic number, because the mean of its divisors is an integer number (3653280).

Almost surely, 2^40489855 is an apocalyptic number.

40489855 is a deficient number, since it is larger than the sum of its proper divisors (17962625).

40489855 is a wasteful number, since it uses less digits than its factorization.

40489855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60918.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 40489855 is about 6363.1639142804. The cubic root of 40489855 is about 343.3855959863.

The spelling of 40489855 in words is "forty million, four hundred eighty-nine thousand, eight hundred fifty-five".