440414431 has 4 divisors (see below), whose sum is σ = 440984952. Its totient is φ = 439843912.

The previous prime is 440414423. The next prime is 440414477. The reversal of 440414431 is 134414044.

It is a happy number.

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 440414431 - 2³ = 440414423 is a prime.

It is a super-2 number, since 2×440414431² = 387929742066107522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440414396 and 440414405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440414131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284101 + ... + 285646.

It is an arithmetic number, because the mean of its divisors is an integer number (110246238).

Almost surely, 2^440414431 is an apocalyptic number.

440414431 is a deficient number, since it is larger than the sum of its proper divisors (570521).

440414431 is an equidigital number, since it uses as much as digits as its factorization.

440414431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570520.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 440414431 is about 20986.0532497180. The cubic root of 440414431 is about 760.8292143985.

Adding to 440414431 its reverse (134414044), we get a palindrome (574828475).

The spelling of 440414431 in words is "four hundred forty million, four hundred fourteen thousand, four hundred thirty-one".