44531989 has 2 divisors, whose sum is σ = 44531990. Its totient is φ = 44531988.

The previous prime is 44531969. The next prime is 44531999. The reversal of 44531989 is 98913544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33443089 + 11088900 = 5783^2 + 3330^2 .

It is a cyclic number.

It is not a de Polignac number, because 44531989 - 2⁵ = 44531957 is a prime.

It is a super-2 number, since 2×44531989² = 3966196088592242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44531969) 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, 22265994 + 22265995.

It is an arithmetic number, because the mean of its divisors is an integer number (22265995).

Almost surely, 2^44531989 is an apocalyptic number.

It is an amenable number.

44531989 is a deficient number, since it is larger than the sum of its proper divisors (1).

44531989 is an equidigital number, since it uses as much as digits as its factorization.

44531989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 44531989 is about 6673.2292782430. The cubic root of 44531989 is about 354.4519454531.

The spelling of 44531989 in words is "forty-four million, five hundred thirty-one thousand, nine hundred eighty-nine".