40449405223 has 2 divisors, whose sum is σ = 40449405224. Its totient is φ = 40449405222.

The previous prime is 40449405203. The next prime is 40449405247. The reversal of 40449405223 is 32250494404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40449405223 - 2³³ = 31859470631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40449405203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20224702611 + 20224702612.

It is an arithmetic number, because the mean of its divisors is an integer number (20224702612).

Almost surely, 2^40449405223 is an apocalyptic number.

40449405223 is a deficient number, since it is larger than the sum of its proper divisors (1).

40449405223 is an equidigital number, since it uses as much as digits as its factorization.

40449405223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 40449405223 its reverse (32250494404), we get a palindrome (72699899627).

The spelling of 40449405223 in words is "forty billion, four hundred forty-nine million, four hundred five thousand, two hundred twenty-three".