44402426021 has 8 divisors (see below), whose sum is σ = 47024376984. Its totient is φ = 41781591040.

The previous prime is 44402426017. The next prime is 44402426023. The reversal of 44402426021 is 12062420444.

It can be written as a sum of positive squares in 4 ways, for example, as 14182428100 + 30219997921 = 119090^2 + 173839^2 .

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 44402426021 - 2² = 44402426017 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 (44402426023) 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, 196370 + ... + 356883.

It is an arithmetic number, because the mean of its divisors is an integer number (5878047123).

Almost surely, 2^44402426021 is an apocalyptic number.

It is an amenable number.

44402426021 is a deficient number, since it is larger than the sum of its proper divisors (2621950963).

44402426021 is a wasteful number, since it uses less digits than its factorization.

44402426021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557991.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 44402426021 its reverse (12062420444), we get a palindrome (56464846465).

The spelling of 44402426021 in words is "forty-four billion, four hundred two million, four hundred twenty-six thousand, twenty-one".