44464420421 has 4 divisors (see below), whose sum is σ = 44762839500. Its totient is φ = 44166001344.

The previous prime is 44464420411. The next prime is 44464420537. The reversal of 44464420421 is 12402446444.

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 14244422500 + 30219997921 = 119350^2 + 173839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44464420421 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 (44464420411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149209316 + ... + 149209613.

It is an arithmetic number, because the mean of its divisors is an integer number (11190709875).

Almost surely, 2^44464420421 is an apocalyptic number.

It is an amenable number.

44464420421 is a deficient number, since it is larger than the sum of its proper divisors (298419079).

44464420421 is a wasteful number, since it uses less digits than its factorization.

44464420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298419078.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 44464420421 its reverse (12402446444), we get a palindrome (56866866865).

The spelling of 44464420421 in words is "forty-four billion, four hundred sixty-four million, four hundred twenty thousand, four hundred twenty-one".