44332421 has 16 divisors (see below), whose sum is σ = 52615680. Its totient is φ = 36581040.

The previous prime is 44332369. The next prime is 44332427. The reversal of 44332421 is 12423344.

It is a de Polignac number, because none of the positive numbers 2^k-44332421 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 (44332427) 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, 726731 + ... + 726791.

It is an arithmetic number, because the mean of its divisors is an integer number (3288480).

Almost surely, 2^44332421 is an apocalyptic number.

It is an amenable number.

44332421 is a deficient number, since it is larger than the sum of its proper divisors (8283259).

44332421 is an frugal number, since it uses more digits than its factorization.

44332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 115 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 44332421 is about 6658.2596074350. The cubic root of 44332421 is about 353.9216659852.

Adding to 44332421 its reverse (12423344), we get a palindrome (56755765).

The spelling of 44332421 in words is "forty-four million, three hundred thirty-two thousand, four hundred twenty-one".