440242433 has 4 divisors (see below), whose sum is σ = 448548948. Its totient is φ = 431935920.

The previous prime is 440242423. The next prime is 440242447. The reversal of 440242433 is 334242044.

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

It can be written as a sum of positive squares in 2 ways, for example, as 289272064 + 150970369 = 17008^2 + 12287^2 .

It is a cyclic number.

It is not a de Polignac number, because 440242433 - 2²⁰ = 439193857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440242423) 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, 4153178 + ... + 4153283.

It is an arithmetic number, because the mean of its divisors is an integer number (112137237).

Almost surely, 2^440242433 is an apocalyptic number.

It is an amenable number.

440242433 is a deficient number, since it is larger than the sum of its proper divisors (8306515).

440242433 is an equidigital number, since it uses as much as digits as its factorization.

440242433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306514.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 440242433 is about 20981.9549375171. The cubic root of 440242433 is about 760.7301575912.

Adding to 440242433 its reverse (334242044), we get a palindrome (774484477).

The spelling of 440242433 in words is "four hundred forty million, two hundred forty-two thousand, four hundred thirty-three".