40440433 has 8 divisors (see below), whose sum is σ = 46712160. Its totient is φ = 34601280.

The previous prime is 40440419. The next prime is 40440451. The reversal of 40440433 is 33404404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40440433 - 2⁵ = 40440401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40440403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107943 + ... + 108316.

It is an arithmetic number, because the mean of its divisors is an integer number (5839020).

Almost surely, 2^40440433 is an apocalyptic number.

It is an amenable number.

40440433 is a deficient number, since it is larger than the sum of its proper divisors (6271727).

40440433 is a wasteful number, since it uses less digits than its factorization.

40440433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216287.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40440433 is about 6359.2792830635. The cubic root of 40440433 is about 343.2458267158.

Adding to 40440433 its reverse (33404404), we get a palindrome (73844837).

The spelling of 40440433 in words is "forty million, four hundred forty thousand, four hundred thirty-three".