44393641 has 4 divisors (see below), whose sum is σ = 44833284. Its totient is φ = 43954000.

The previous prime is 44393639. The next prime is 44393659. The reversal of 44393641 is 14639344.

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 23040000 + 21353641 = 4800^2 + 4621^2 .

It is a cyclic number.

It is not a de Polignac number, because 44393641 - 2¹ = 44393639 is a prime.

It is a super-2 number, since 2×44393641² = 3941590722473762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44393597 and 44393606.

It is not an unprimeable number, because it can be changed into a prime (44393621) 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, 219670 + ... + 219871.

It is an arithmetic number, because the mean of its divisors is an integer number (11208321).

Almost surely, 2^44393641 is an apocalyptic number.

It is an amenable number.

44393641 is a deficient number, since it is larger than the sum of its proper divisors (439643).

44393641 is a wasteful number, since it uses less digits than its factorization.

44393641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439642.

The product of its digits is 31104, while the sum is 34.

The square root of 44393641 is about 6662.8553188554. The cubic root of 44393641 is about 354.0845048134.

The spelling of 44393641 in words is "forty-four million, three hundred ninety-three thousand, six hundred forty-one".