440420141431 has 4 divisors (see below), whose sum is σ = 466327208592. Its totient is φ = 414513074272.

The previous prime is 440420141401. The next prime is 440420141443. The reversal of 440420141431 is 134141024044.

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

It is not a de Polignac number, because 440420141431 - 2³³ = 431830206839 is a prime.

It is a super-2 number, since 2×440420141431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440420141431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440420141401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12953533555 + ... + 12953533588.

It is an arithmetic number, because the mean of its divisors is an integer number (116581802148).

Almost surely, 2^440420141431 is an apocalyptic number.

440420141431 is a deficient number, since it is larger than the sum of its proper divisors (25907067161).

440420141431 is a wasteful number, since it uses less digits than its factorization.

440420141431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25907067160.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 440420141431 its reverse (134141024044), we get a palindrome (574561165475).

The spelling of 440420141431 in words is "four hundred forty billion, four hundred twenty million, one hundred forty-one thousand, four hundred thirty-one".