440006131 has 6 divisors (see below), whose sum is σ = 442004780. Its totient is φ = 438016476.

The previous prime is 440006111. The next prime is 440006141. The reversal of 440006131 is 131600044.

It is a happy number.

It is not a de Polignac number, because 440006131 - 2¹⁵ = 439973363 is a prime.

It is a super-2 number, since 2×440006131² = 387210790635178322, 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 = 440006099 and 440006108.

It is not an unprimeable number, because it can be changed into a prime (440006111) 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 5 ways as a sum of consecutive naturals, for example, 47260 + ... + 55798.

Almost surely, 2^440006131 is an apocalyptic number.

440006131 is a deficient number, since it is larger than the sum of its proper divisors (1998649).

440006131 is an frugal number, since it uses more digits than its factorization.

440006131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8993 (or 8766 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 440006131 is about 20976.3231048723. The cubic root of 440006131 is about 760.5940248482.

Adding to 440006131 its reverse (131600044), we get a palindrome (571606175).

The spelling of 440006131 in words is "four hundred forty million, six thousand, one hundred thirty-one".