40291223 has 8 divisors (see below), whose sum is σ = 46503840. Its totient is φ = 34192800.

The previous prime is 40291213. The next prime is 40291247. The reversal of 40291223 is 32219204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40291223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40291213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27788 + ... + 29201.

It is an arithmetic number, because the mean of its divisors is an integer number (5812980).

Almost surely, 2^40291223 is an apocalyptic number.

40291223 is a deficient number, since it is larger than the sum of its proper divisors (6212617).

40291223 is a wasteful number, since it uses less digits than its factorization.

40291223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57097.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40291223 is about 6347.5367663370. The cubic root of 40291223 is about 342.8231570893.

The spelling of 40291223 in words is "forty million, two hundred ninety-one thousand, two hundred twenty-three".