44444001421 has 8 divisors (see below), whose sum is σ = 45105194304. Its totient is φ = 43783787040.

The previous prime is 44444001419. The next prime is 44444001431. The reversal of 44444001421 is 12410044444.

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 44444001421 - 2¹ = 44444001419 is a prime.

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 44444001421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44444001431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152856 + ... + 335041.

It is an arithmetic number, because the mean of its divisors is an integer number (5638149288).

Almost surely, 2^44444001421 is an apocalyptic number.

It is an amenable number.

44444001421 is a deficient number, since it is larger than the sum of its proper divisors (661192883).

44444001421 is a wasteful number, since it uses less digits than its factorization.

44444001421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489251.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 44444001421 its reverse (12410044444), we get a palindrome (56854045865).

It can be divided in two parts, 4444 and 4001421, that added together give a triangular number (4005865 = T₂₈₃₀).

The spelling of 44444001421 in words is "forty-four billion, four hundred forty-four million, one thousand, four hundred twenty-one".