40254443 has 2 divisors, whose sum is σ = 40254444. Its totient is φ = 40254442.

The previous prime is 40254437. The next prime is 40254469. The reversal of 40254443 is 34445204.

It is an a-pointer prime, because the next prime (40254469) can be obtained adding 40254443 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40254443 - 2⁴ = 40254427 is a prime.

It is not a weakly prime, because it can be changed into another prime (40254143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127221 + 20127222.

It is an arithmetic number, because the mean of its divisors is an integer number (20127222).

Almost surely, 2^40254443 is an apocalyptic number.

40254443 is a deficient number, since it is larger than the sum of its proper divisors (1).

40254443 is an equidigital number, since it uses as much as digits as its factorization.

40254443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 40254443 is about 6344.6389180157. The cubic root of 40254443 is about 342.7188095130.

Adding to 40254443 its reverse (34445204), we get a palindrome (74699647).

It can be divided in two parts, 402 and 54443, that added together give a palindrome (54845).

The spelling of 40254443 in words is "forty million, two hundred fifty-four thousand, four hundred forty-three".