40038555 has 8 divisors (see below), whose sum is σ = 64061712. Its totient is φ = 21353888.

The previous prime is 40038539. The next prime is 40038563. The reversal of 40038555 is 55583004.

40038555 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 40038555 - 2⁴ = 40038539 is a prime.

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, 1334604 + ... + 1334633.

It is an arithmetic number, because the mean of its divisors is an integer number (8007714).

Almost surely, 2^40038555 is an apocalyptic number.

40038555 is a deficient number, since it is larger than the sum of its proper divisors (24023157).

40038555 is a wasteful number, since it uses less digits than its factorization.

40038555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669245.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 40038555 is about 6327.6026265877. The cubic root of 40038555 is about 342.1050342550.

The spelling of 40038555 in words is "forty million, thirty-eight thousand, five hundred fifty-five".