44042989 has 2 divisors, whose sum is σ = 44042990. Its totient is φ = 44042988.

The previous prime is 44042983. The next prime is 44043001. The reversal of 44042989 is 98924044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40220964 + 3822025 = 6342^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 44042989 - 2³ = 44042981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44042981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22021494 + 22021495.

It is an arithmetic number, because the mean of its divisors is an integer number (22021495).

Almost surely, 2^44042989 is an apocalyptic number.

It is an amenable number.

44042989 is a deficient number, since it is larger than the sum of its proper divisors (1).

44042989 is an equidigital number, since it uses as much as digits as its factorization.

44042989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 44042989 is about 6636.4892074048. The cubic root of 44042989 is about 353.1497704607.

The spelling of 44042989 in words is "forty-four million, forty-two thousand, nine hundred eighty-nine".