44040040421 has 16 divisors (see below), whose sum is σ = 50362409664. Its totient is φ = 38150701824.

The previous prime is 44040040361. The next prime is 44040040453. The reversal of 44040040421 is 12404004044.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44040040421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44040040021) 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, 210455 + ... + 363828.

It is an arithmetic number, because the mean of its divisors is an integer number (3147650604).

Almost surely, 2^44040040421 is an apocalyptic number.

It is an amenable number.

44040040421 is a deficient number, since it is larger than the sum of its proper divisors (6322369243).

44040040421 is a wasteful number, since it uses less digits than its factorization.

44040040421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574660.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 44040040421 its reverse (12404004044), we get a palindrome (56444044465).

The spelling of 44040040421 in words is "forty-four billion, forty million, forty thousand, four hundred twenty-one".