40387055 has 8 divisors (see below), whose sum is σ = 48673872. Its totient is φ = 32170048.

The previous prime is 40387049. The next prime is 40387097. The reversal of 40387055 is 55078304.

It is a happy number.

40387055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40387055 - 2¹² = 40382959 is a prime.

It is a super-2 number, since 2×40387055² = 3262228423146050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 16169 + ... + 18498.

It is an arithmetic number, because the mean of its divisors is an integer number (6084234).

Almost surely, 2^40387055 is an apocalyptic number.

40387055 is a deficient number, since it is larger than the sum of its proper divisors (8286817).

40387055 is a wasteful number, since it uses less digits than its factorization.

40387055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34905.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 40387055 is about 6355.0810380356. The cubic root of 40387055 is about 343.0947415982.

The spelling of 40387055 in words is "forty million, three hundred eighty-seven thousand, fifty-five".