548864399 has 2 divisors, whose sum is σ = 548864400. Its totient is φ = 548864398.

The previous prime is 548864369. The next prime is 548864413. The reversal of 548864399 is 993468845.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 548864399 - 2²⁰ = 547815823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548864369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274432199 + 274432200.

It is an arithmetic number, because the mean of its divisors is an integer number (274432200).

Almost surely, 2^548864399 is an apocalyptic number.

548864399 is a deficient number, since it is larger than the sum of its proper divisors (1).

548864399 is an equidigital number, since it uses as much as digits as its factorization.

548864399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 56.

The square root of 548864399 is about 23427.8551941914. The cubic root of 548864399 is about 818.7569899059.

The spelling of 548864399 in words is "five hundred forty-eight million, eight hundred sixty-four thousand, three hundred ninety-nine".