40406055 has 16 divisors (see below), whose sum is σ = 67461120. Its totient is φ = 20612768.

The previous prime is 40405993. The next prime is 40406081. The reversal of 40406055 is 55060404.

It is a cyclic number.

It is not a de Polignac number, because 40406055 - 2⁹ = 40405543 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58215 + ... + 58904.

It is an arithmetic number, because the mean of its divisors is an integer number (4216320).

Almost surely, 2^40406055 is an apocalyptic number.

40406055 is a deficient number, since it is larger than the sum of its proper divisors (27055065).

40406055 is a wasteful number, since it uses less digits than its factorization.

40406055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117150.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40406055 is about 6356.5757291171. The cubic root of 40406055 is about 343.1485358821.

Adding to 40406055 its reverse (55060404), we get a palindrome (95466459).

The spelling of 40406055 in words is "forty million, four hundred six thousand, fifty-five".