44400400405 has 8 divisors (see below), whose sum is σ = 53282140632. Its totient is φ = 35519213568.

The previous prime is 44400400397. The next prime is 44400400417. The reversal of 44400400405 is 50400400444.

It can be written as a sum of positive squares in 4 ways, for example, as 6512167204 + 37888233201 = 80698^2 + 194649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44400400405 - 2³ = 44400400397 is a prime.

It is a super-2 number, since 2×44400400405² (a number of 22 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 44400400405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65469 + ... + 305101.

It is an arithmetic number, because the mean of its divisors is an integer number (6660267579).

Almost surely, 2^44400400405 is an apocalyptic number.

It is an amenable number.

44400400405 is a deficient number, since it is larger than the sum of its proper divisors (8881740227).

44400400405 is a wasteful number, since it uses less digits than its factorization.

44400400405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276695.

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 44400400405 its reverse (50400400444), we get a palindrome (94800800849).

The spelling of 44400400405 in words is "forty-four billion, four hundred million, four hundred thousand, four hundred five".