40394055 has 32 divisors (see below), whose sum is σ = 70801920. Its totient is φ = 19543680.

The previous prime is 40394027. The next prime is 40394063. The reversal of 40394055 is 55049304.

40394055 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 40394055 - 2¹² = 40389959 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 9750 + ... + 13260.

It is an arithmetic number, because the mean of its divisors is an integer number (2212560).

Almost surely, 2^40394055 is an apocalyptic number.

40394055 is a deficient number, since it is larger than the sum of its proper divisors (30407865).

40394055 is a wasteful number, since it uses less digits than its factorization.

40394055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 40394055 is about 6355.6317545937. The cubic root of 40394055 is about 343.1145625074.

The spelling of 40394055 in words is "forty million, three hundred ninety-four thousand, fifty-five".