440009661827 has 4 divisors (see below), whose sum is σ = 442812271296. Its totient is φ = 437207052360.

The previous prime is 440009661809. The next prime is 440009661859. The reversal of 440009661827 is 728166900044.

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 440009661827 - 2¹⁶ = 440009596291 is a prime.

It is a super-2 number, since 2×440009661827² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440009661877) 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, 1401304499 + ... + 1401304812.

It is an arithmetic number, because the mean of its divisors is an integer number (110703067824).

Almost surely, 2^440009661827 is an apocalyptic number.

440009661827 is a deficient number, since it is larger than the sum of its proper divisors (2802609469).

440009661827 is a wasteful number, since it uses less digits than its factorization.

440009661827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802609468.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 440009661827 in words is "four hundred forty billion, nine million, six hundred sixty-one thousand, eight hundred twenty-seven".