40491227 has 4 divisors (see below), whose sum is σ = 46275696. Its totient is φ = 34706760.

The previous prime is 40491193. The next prime is 40491233. The reversal of 40491227 is 72219404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40491227 - 2¹⁴ = 40474843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40491227.

It is not an unprimeable number, because it can be changed into a prime (40491277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2892224 + ... + 2892237.

It is an arithmetic number, because the mean of its divisors is an integer number (11568924).

Almost surely, 2^40491227 is an apocalyptic number.

40491227 is a deficient number, since it is larger than the sum of its proper divisors (5784469).

40491227 is an equidigital number, since it uses as much as digits as its factorization.

40491227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784468.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40491227 is about 6363.2717213710. The cubic root of 40491227 is about 343.3894744863.

The spelling of 40491227 in words is "forty million, four hundred ninety-one thousand, two hundred twenty-seven".