40870185 has 16 divisors (see below), whose sum is σ = 66502080. Its totient is φ = 21427520.

The previous prime is 40870177. The next prime is 40870187. The reversal of 40870185 is 58107804.

It is a happy number.

40870185 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 40870185 - 2³ = 40870177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40870187) 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 15 ways as a sum of consecutive naturals, for example, 22206 + ... + 23975.

It is an arithmetic number, because the mean of its divisors is an integer number (4156380).

Almost surely, 2^40870185 is an apocalyptic number.

It is an amenable number.

40870185 is a deficient number, since it is larger than the sum of its proper divisors (25631895).

40870185 is a wasteful number, since it uses less digits than its factorization.

40870185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46248.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 40870185 is about 6392.9793523834. The cubic root of 40870185 is about 344.4574121799.

Adding to 40870185 its reverse (58107804), we get a palindrome (98977989).

The spelling of 40870185 in words is "forty million, eight hundred seventy thousand, one hundred eighty-five".