44352421 has 8 divisors (see below), whose sum is σ = 44796024. Its totient is φ = 43911360.

The previous prime is 44352419. The next prime is 44352431. The reversal of 44352421 is 12425344.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9672100 + 34680321 = 3110^2 + 5889^2 .

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 44352421 - 2¹ = 44352419 is a prime.

It is a super-2 number, since 2×44352421² = 3934274497122482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44352431) 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, 56991 + ... + 57763.

It is an arithmetic number, because the mean of its divisors is an integer number (5599503).

Almost surely, 2^44352421 is an apocalyptic number.

It is an amenable number.

44352421 is a deficient number, since it is larger than the sum of its proper divisors (443603).

44352421 is a wasteful number, since it uses less digits than its factorization.

44352421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271.

The product of its digits is 3840, while the sum is 25.

The square root of 44352421 is about 6659.7613320599. The cubic root of 44352421 is about 353.9748803821.

Adding to 44352421 its reverse (12425344), we get a palindrome (56777765).

The spelling of 44352421 in words is "forty-four million, three hundred fifty-two thousand, four hundred twenty-one".