40223791 has 8 divisors (see below), whose sum is σ = 41247360. Its totient is φ = 39204312.

The previous prime is 40223789. The next prime is 40223831. The reversal of 40223791 is 19732204.

40223791 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 40223791 - 2¹ = 40223789 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 (40223731) by changing a digit.

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, 31320 + ... + 32578.

It is an arithmetic number, because the mean of its divisors is an integer number (5155920).

Almost surely, 2^40223791 is an apocalyptic number.

40223791 is a deficient number, since it is larger than the sum of its proper divisors (1023569).

40223791 is a wasteful number, since it uses less digits than its factorization.

40223791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 40223791 is about 6342.2228753017. Note that the first 3 decimals coincide. The cubic root of 40223791 is about 342.6317989566.

Adding to 40223791 its reverse (19732204), we get a palindrome (59955995).

It can be divided in two parts, 40223 and 791, that added together give a palindrome (41014).

The spelling of 40223791 in words is "forty million, two hundred twenty-three thousand, seven hundred ninety-one".