40433243 has 4 divisors (see below), whose sum is σ = 40478160. Its totient is φ = 40388328.

The previous prime is 40433219. The next prime is 40433249. The reversal of 40433243 is 34233404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40433243 - 2¹⁸ = 40171099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40433249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21080 + ... + 22917.

It is an arithmetic number, because the mean of its divisors is an integer number (10119540).

Almost surely, 2^40433243 is an apocalyptic number.

40433243 is a deficient number, since it is larger than the sum of its proper divisors (44917).

40433243 is an equidigital number, since it uses as much as digits as its factorization.

40433243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44916.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 40433243 is about 6358.7139423000. The cubic root of 40433243 is about 343.2254833484.

Adding to 40433243 its reverse (34233404), we get a palindrome (74666647).

The spelling of 40433243 in words is "forty million, four hundred thirty-three thousand, two hundred forty-three".