44001010421 has 4 divisors (see below), whose sum is σ = 44151184812. Its totient is φ = 43850836032.

The previous prime is 44001010357. The next prime is 44001010447. The reversal of 44001010421 is 12401010044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24976325521 + 19024684900 = 158039^2 + 137930^2 .

It is a cyclic number.

It is not a de Polignac number, because 44001010421 - 2⁶ = 44001010357 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 44001010421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44001010481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75086756 + ... + 75087341.

It is an arithmetic number, because the mean of its divisors is an integer number (11037796203).

Almost surely, 2^44001010421 is an apocalyptic number.

It is an amenable number.

44001010421 is a deficient number, since it is larger than the sum of its proper divisors (150174391).

44001010421 is a wasteful number, since it uses less digits than its factorization.

44001010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150174390.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 44001010421 its reverse (12401010044), we get a palindrome (56402020465).

The spelling of 44001010421 in words is "forty-four billion, one million, ten thousand, four hundred twenty-one".