44131309 has 2 divisors, whose sum is σ = 44131310. Its totient is φ = 44131308.

The previous prime is 44131271. The next prime is 44131313. The reversal of 44131309 is 90313144.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40998409 + 3132900 = 6403^2 + 1770^2 .

It is a cyclic number.

It is not a de Polignac number, because 44131309 - 2⁹ = 44130797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44131369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22065654 + 22065655.

It is an arithmetic number, because the mean of its divisors is an integer number (22065655).

Almost surely, 2^44131309 is an apocalyptic number.

It is an amenable number.

44131309 is a deficient number, since it is larger than the sum of its proper divisors (1).

44131309 is an equidigital number, since it uses as much as digits as its factorization.

44131309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 44131309 is about 6643.1399955142. The cubic root of 44131309 is about 353.3856715120.

The spelling of 44131309 in words is "forty-four million, one hundred thirty-one thousand, three hundred nine".