44140321 has 2 divisors, whose sum is σ = 44140322. Its totient is φ = 44140320.

The previous prime is 44140307. The next prime is 44140331. The reversal of 44140321 is 12304144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33177600 + 10962721 = 5760^2 + 3311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44140321 is a prime.

It is not a weakly prime, because it can be changed into another prime (44140301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22070160 + 22070161.

It is an arithmetic number, because the mean of its divisors is an integer number (22070161).

Almost surely, 2^44140321 is an apocalyptic number.

It is an amenable number.

44140321 is a deficient number, since it is larger than the sum of its proper divisors (1).

44140321 is an equidigital number, since it uses as much as digits as its factorization.

44140321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 44140321 is about 6643.8182545882. The cubic root of 44140321 is about 353.4097246917.

Adding to 44140321 its reverse (12304144), we get a palindrome (56444465).

The spelling of 44140321 in words is "forty-four million, one hundred forty thousand, three hundred twenty-one".