489109 has 2 divisors, whose sum is σ = 489110. Its totient is φ = 489108.

The previous prime is 489101. The next prime is 489113. The reversal of 489109 is 901984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 6084 = 695^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 489109 - 2³ = 489101 is a prime.

It is a super-2 number, since 2×489109² = 478455227762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244554 + 244555.

It is an arithmetic number, because the mean of its divisors is an integer number (244555).

2⁴⁸⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

489109 is a deficient number, since it is larger than the sum of its proper divisors (1).

489109 is an equidigital number, since it uses as much as digits as its factorization.

489109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 489109 is about 699.3632818500. The cubic root of 489109 is about 78.7895375495.

It can be divided in two parts, 489 and 109, that multiplied together give a triangular number (53301 = T₃₂₆).

The spelling of 489109 in words is "four hundred eighty-nine thousand, one hundred nine".