440400433 has 12 divisors (see below), whose sum is σ = 490904064. Its totient is φ = 394717400.

The previous prime is 440400421. The next prime is 440400461. The reversal of 440400433 is 334004044.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-440400433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440400413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17041 + ... + 34222.

It is an arithmetic number, because the mean of its divisors is an integer number (40908672).

Almost surely, 2^440400433 is an apocalyptic number.

It is an amenable number.

440400433 is a deficient number, since it is larger than the sum of its proper divisors (50503631).

440400433 is a wasteful number, since it uses less digits than its factorization.

440400433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51356 (or 51345 counting only the distinct ones).

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

The square root of 440400433 is about 20985.7197398612. The cubic root of 440400433 is about 760.8211536574.

Adding to 440400433 its reverse (334004044), we get a palindrome (774404477).

The spelling of 440400433 in words is "four hundred forty million, four hundred thousand, four hundred thirty-three".