44142389 has 2 divisors, whose sum is σ = 44142390. Its totient is φ = 44142388.

The previous prime is 44142383. The next prime is 44142391. The reversal of 44142389 is 98324144.

44142389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 18992164 = 5015^2 + 4358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44142389 is a prime.

Together with 44142391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44142383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22071194 + 22071195.

It is an arithmetic number, because the mean of its divisors is an integer number (22071195).

Almost surely, 2^44142389 is an apocalyptic number.

It is an amenable number.

44142389 is a deficient number, since it is larger than the sum of its proper divisors (1).

44142389 is an equidigital number, since it uses as much as digits as its factorization.

44142389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 44142389 is about 6643.9738861618. The cubic root of 44142389 is about 353.4152437566.

The spelling of 44142389 in words is "forty-four million, one hundred forty-two thousand, three hundred eighty-nine".