440044404397 has 16 divisors (see below), whose sum is σ = 493509961728. Its totient is φ = 389613047040.

The previous prime is 440044404367. The next prime is 440044404419. The reversal of 440044404397 is 793404440044.

It is a cyclic number.

It is not a de Polignac number, because 440044404397 - 2²⁷ = 439910186669 is a prime.

It is a super-2 number, since 2×440044404397² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440044404367) 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, 4785973 + ... + 4877050.

It is an arithmetic number, because the mean of its divisors is an integer number (30844372608).

Almost surely, 2^440044404397 is an apocalyptic number.

It is an amenable number.

440044404397 is a deficient number, since it is larger than the sum of its proper divisors (53465557331).

440044404397 is a wasteful number, since it uses less digits than its factorization.

440044404397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9663180.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 440044404397 in words is "four hundred forty billion, forty-four million, four hundred four thousand, three hundred ninety-seven".