40433344 has 56 divisors (see below), whose sum is σ = 97109280. Its totient is φ = 16306176.

The previous prime is 40433299. The next prime is 40433347. The reversal of 40433344 is 44333404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (40433347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4962 + ... + 10270.

Almost surely, 2^40433344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40433344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48554640).

40433344 is an abundant number, since it is smaller than the sum of its proper divisors (56675936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40433344 is a wasteful number, since it uses less digits than its factorization.

40433344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345 (or 5335 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 40433344 is about 6358.7218841525. The cubic root of 40433344 is about 343.2257691342.

Adding to 40433344 its reverse (44333404), we get a palindrome (84766748).

The spelling of 40433344 in words is "forty million, four hundred thirty-three thousand, three hundred forty-four".