40543229 has 2 divisors, whose sum is σ = 40543230. Its totient is φ = 40543228.

The previous prime is 40543211. The next prime is 40543253. The reversal of 40543229 is 92234504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 2474329 = 6170^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 40543229 - 2¹⁶ = 40477693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40543729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20271614 + 20271615.

It is an arithmetic number, because the mean of its divisors is an integer number (20271615).

Almost surely, 2^40543229 is an apocalyptic number.

It is an amenable number.

40543229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40543229 is an equidigital number, since it uses as much as digits as its factorization.

40543229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40543229 is about 6367.3565158549. The cubic root of 40543229 is about 343.5364141388.

It can be divided in two parts, 405 and 43229, that added together give a palindrome (43634).

The spelling of 40543229 in words is "forty million, five hundred forty-three thousand, two hundred twenty-nine".