40043233 has 2 divisors, whose sum is σ = 40043234. Its totient is φ = 40043232.

The previous prime is 40043209. The next prime is 40043239. The reversal of 40043233 is 33234004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21233664 + 18809569 = 4608^2 + 4337^2 .

It is a cyclic number.

It is not a de Polignac number, because 40043233 - 2⁹ = 40042721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40043233.

It is not a weakly prime, because it can be changed into another prime (40043239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021616 + 20021617.

It is an arithmetic number, because the mean of its divisors is an integer number (20021617).

Almost surely, 2^40043233 is an apocalyptic number.

It is an amenable number.

40043233 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043233 is an equidigital number, since it uses as much as digits as its factorization.

40043233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 40043233 is about 6327.9722660581. The cubic root of 40043233 is about 342.1183572885.

Adding to 40043233 its reverse (33234004), we get a palindrome (73277237).

The spelling of 40043233 in words is "forty million, forty-three thousand, two hundred thirty-three".