44189869 has 2 divisors, whose sum is σ = 44189870. Its totient is φ = 44189868.

The previous prime is 44189819. The next prime is 44189891. The reversal of 44189869 is 96898144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33200644 + 10989225 = 5762^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 44189869 - 2¹¹ = 44187821 is a prime.

It is a super-2 number, since 2×44189869² = 3905489044474322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44189809) 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, 22094934 + 22094935.

It is an arithmetic number, because the mean of its divisors is an integer number (22094935).

Almost surely, 2^44189869 is an apocalyptic number.

It is an amenable number.

44189869 is a deficient number, since it is larger than the sum of its proper divisors (1).

44189869 is an equidigital number, since it uses as much as digits as its factorization.

44189869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 49.

The square root of 44189869 is about 6647.5460885954. The cubic root of 44189869 is about 353.5419106894.

The spelling of 44189869 in words is "forty-four million, one hundred eighty-nine thousand, eight hundred sixty-nine".