44143009 has 2 divisors, whose sum is σ = 44143010. Its totient is φ = 44143008.

The previous prime is 44142979. The next prime is 44143013. The reversal of 44143009 is 90034144.

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., 37173409 + 6969600 = 6097^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 44143009 - 2¹¹ = 44140961 is a prime.

It is not a weakly prime, because it can be changed into another prime (44143409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22071504 + 22071505.

It is an arithmetic number, because the mean of its divisors is an integer number (22071505).

Almost surely, 2^44143009 is an apocalyptic number.

It is an amenable number.

44143009 is a deficient number, since it is larger than the sum of its proper divisors (1).

44143009 is an equidigital number, since it uses as much as digits as its factorization.

44143009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 44143009 is about 6644.0205448207. The cubic root of 44143009 is about 353.4168983750.

The spelling of 44143009 in words is "forty-four million, one hundred forty-three thousand, nine".