440440397629 has 16 divisors (see below), whose sum is σ = 445583945728. Its totient is φ = 435326234112.

The previous prime is 440440397609. The next prime is 440440397633. The reversal of 440440397629 is 926793044044.

It is a 10-Lehmer number, since φ(440440397629) divides (440440397629-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 440440397629 - 2²³ = 440432009021 is a prime.

It is a pancake number, because a pancake can be divided into 440440397629 parts by 938552 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440440397609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37907629 + ... + 37919245.

It is an arithmetic number, because the mean of its divisors is an integer number (27848996608).

Almost surely, 2^440440397629 is an apocalyptic number.

It is an amenable number.

440440397629 is a deficient number, since it is larger than the sum of its proper divisors (5143548099).

440440397629 is a wasteful number, since it uses less digits than its factorization.

440440397629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12844.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 440440397629 in words is "four hundred forty billion, four hundred forty million, three hundred ninety-seven thousand, six hundred twenty-nine".