489609879 has 16 divisors (see below), whose sum is σ = 749642880. Its totient is φ = 281115360.

The previous prime is 489609853. The next prime is 489609881. The reversal of 489609879 is 978906984.

It is not a de Polignac number, because 489609879 - 2²⁰ = 488561303 is a prime.

It is a super-2 number, since 2×489609879² = 479435667228789282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489609829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389812 + ... + 391065.

It is an arithmetic number, because the mean of its divisors is an integer number (46852680).

Almost surely, 2^489609879 is an apocalyptic number.

489609879 is a deficient number, since it is larger than the sum of its proper divisors (260033001).

489609879 is a wasteful number, since it uses less digits than its factorization.

489609879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780910.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The square root of 489609879 is about 22127.1299313761. The cubic root of 489609879 is about 788.1642355460.

The spelling of 489609879 in words is "four hundred eighty-nine million, six hundred nine thousand, eight hundred seventy-nine".