548789669 has 2 divisors, whose sum is σ = 548789670. Its totient is φ = 548789668.

The previous prime is 548789651. The next prime is 548789671. The reversal of 548789669 is 966987845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535320769 + 13468900 = 23137^2 + 3670^2 .

It is a cyclic number.

It is not a de Polignac number, because 548789669 - 2²⁰ = 547741093 is a prime.

It is a super-2 number, since 2×548789669² = 602340201602259122, which contains 22 as substring.

Together with 548789671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548789629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274394834 + 274394835.

It is an arithmetic number, because the mean of its divisors is an integer number (274394835).

Almost surely, 2^548789669 is an apocalyptic number.

It is an amenable number.

548789669 is a deficient number, since it is larger than the sum of its proper divisors (1).

548789669 is an equidigital number, since it uses as much as digits as its factorization.

548789669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 62.

The square root of 548789669 is about 23426.2602435813. The cubic root of 548789669 is about 818.7198292478.

The spelling of 548789669 in words is "five hundred forty-eight million, seven hundred eighty-nine thousand, six hundred sixty-nine".