54444989 has 2 divisors, whose sum is σ = 54444990. Its totient is φ = 54444988.

The previous prime is 54444961. The next prime is 54445057. The reversal of 54444989 is 98944445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42680089 + 11764900 = 6533^2 + 3430^2 .

It is a cyclic number.

It is not a de Polignac number, because 54444989 - 2¹⁶ = 54379453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54404989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27222494 + 27222495.

It is an arithmetic number, because the mean of its divisors is an integer number (27222495).

Almost surely, 2^54444989 is an apocalyptic number.

It is an amenable number.

54444989 is a deficient number, since it is larger than the sum of its proper divisors (1).

54444989 is an equidigital number, since it uses as much as digits as its factorization.

54444989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 47.

The square root of 54444989 is about 7378.6847744025. The cubic root of 54444989 is about 379.0117186687.

The spelling of 54444989 in words is "fifty-four million, four hundred forty-four thousand, nine hundred eighty-nine".