541668889 has 2 divisors, whose sum is σ = 541668890. Its totient is φ = 541668888.

The previous prime is 541668871. The next prime is 541668901. The reversal of 541668889 is 988866145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372798864 + 168870025 = 19308^2 + 12995^2 .

It is a cyclic number.

It is not a de Polignac number, because 541668889 - 2¹⁹ = 541144601 is a prime.

It is not a weakly prime, because it can be changed into another prime (541668839) 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, 270834444 + 270834445.

It is an arithmetic number, because the mean of its divisors is an integer number (270834445).

Almost surely, 2^541668889 is an apocalyptic number.

It is an amenable number.

541668889 is a deficient number, since it is larger than the sum of its proper divisors (1).

541668889 is an equidigital number, since it uses as much as digits as its factorization.

541668889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 55.

The square root of 541668889 is about 23273.7811496113. The cubic root of 541668889 is about 815.1633225574.

It can be divided in two parts, 5416 and 68889, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 541668889 in words is "five hundred forty-one million, six hundred sixty-eight thousand, eight hundred eighty-nine".