44143889 has 2 divisors, whose sum is σ = 44143890. Its totient is φ = 44143888.

The previous prime is 44143873. The next prime is 44143901. The reversal of 44143889 is 98834144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44089600 + 54289 = 6640^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 44143889 - 2⁴ = 44143873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (44148889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22071944 + 22071945.

It is an arithmetic number, because the mean of its divisors is an integer number (22071945).

Almost surely, 2^44143889 is an apocalyptic number.

It is an amenable number.

44143889 is a deficient number, since it is larger than the sum of its proper divisors (1).

44143889 is an equidigital number, since it uses as much as digits as its factorization.

44143889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 41.

The square root of 44143889 is about 6644.0867694515. The cubic root of 44143889 is about 353.4192468390.

The spelling of 44143889 in words is "forty-four million, one hundred forty-three thousand, eight hundred eighty-nine".