489065819 has 4 divisors (see below), whose sum is σ = 533526360. Its totient is φ = 444605280.

The previous prime is 489065807. The next prime is 489065861. The reversal of 489065819 is 918560984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489065819 - 2⁴ = 489065803 is a prime.

It is a super-2 number, since 2×489065819² = 478370750628281522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489065869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22230254 + ... + 22230275.

It is an arithmetic number, because the mean of its divisors is an integer number (133381590).

Almost surely, 2^489065819 is an apocalyptic number.

489065819 is a deficient number, since it is larger than the sum of its proper divisors (44460541).

489065819 is a wasteful number, since it uses less digits than its factorization.

489065819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44460540.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 489065819 is about 22114.8325564541. The cubic root of 489065819 is about 787.8721883585.

The spelling of 489065819 in words is "four hundred eighty-nine million, sixty-five thousand, eight hundred nineteen".