44142689 has 2 divisors, whose sum is σ = 44142690. Its totient is φ = 44142688.

The previous prime is 44142661. The next prime is 44142697. The reversal of 44142689 is 98624144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37210000 + 6932689 = 6100^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 44142689 - 2¹⁶ = 44077153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44142629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22071344 + 22071345.

It is an arithmetic number, because the mean of its divisors is an integer number (22071345).

Almost surely, 2^44142689 is an apocalyptic number.

It is an amenable number.

44142689 is a deficient number, since it is larger than the sum of its proper divisors (1).

44142689 is an equidigital number, since it uses as much as digits as its factorization.

44142689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 38.

The square root of 44142689 is about 6643.9964629732. The cubic root of 44142689 is about 353.4160443804.

The spelling of 44142689 in words is "forty-four million, one hundred forty-two thousand, six hundred eighty-nine".