44012009 has 2 divisors, whose sum is σ = 44012010. Its totient is φ = 44012008.

The previous prime is 44011993. The next prime is 44012011. The reversal of 44012009 is 90021044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40960000 + 3052009 = 6400^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 44012009 - 2⁴ = 44011993 is a prime.

Together with 44012011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44012039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22006004 + 22006005.

It is an arithmetic number, because the mean of its divisors is an integer number (22006005).

Almost surely, 2^44012009 is an apocalyptic number.

It is an amenable number.

44012009 is a deficient number, since it is larger than the sum of its proper divisors (1).

44012009 is an equidigital number, since it uses as much as digits as its factorization.

44012009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 44012009 is about 6634.1547313882. The cubic root of 44012009 is about 353.0669487574.

It can be divided in two parts, 4 and 4012009, that multiplied together give a square (16048036 = 4006²).

The spelling of 44012009 in words is "forty-four million, twelve thousand, nine".