440432340431 has 4 divisors (see below), whose sum is σ = 440675540664. Its totient is φ = 440189140200.

The previous prime is 440432340401. The next prime is 440432340433. The reversal of 440432340431 is 134043234044.

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 440432340431 - 2¹⁴ = 440432324047 is a prime.

It is a super-2 number, since 2×440432340431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440432340433) 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, 121597400 + ... + 121601021.

It is an arithmetic number, because the mean of its divisors is an integer number (110168885166).

Almost surely, 2^440432340431 is an apocalyptic number.

440432340431 is a deficient number, since it is larger than the sum of its proper divisors (243200233).

440432340431 is a wasteful number, since it uses less digits than its factorization.

440432340431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243200232.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 440432340431 its reverse (134043234044), we get a palindrome (574475574475).

It can be divided in two parts, 44043234043 and 1, that added together give a palindrome (44043234044).

The spelling of 440432340431 in words is "four hundred forty billion, four hundred thirty-two million, three hundred forty thousand, four hundred thirty-one".