489269881 has 4 divisors (see below), whose sum is σ = 492841332. Its totient is φ = 485698432.

The previous prime is 489269873. The next prime is 489269887. The reversal of 489269881 is 188962984.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117397225 + 371872656 = 10835^2 + 19284^2 .

It is a cyclic number.

It is not a de Polignac number, because 489269881 - 2³ = 489269873 is a prime.

It is a super-2 number, since 2×489269881² = 478770032907508322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489269887) 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, 1785520 + ... + 1785793.

It is an arithmetic number, because the mean of its divisors is an integer number (123210333).

Almost surely, 2^489269881 is an apocalyptic number.

It is an amenable number.

489269881 is a deficient number, since it is larger than the sum of its proper divisors (3571451).

489269881 is a wasteful number, since it uses less digits than its factorization.

489269881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571450.

The product of its digits is 1990656, while the sum is 55.

The square root of 489269881 is about 22119.4457661127. The cubic root of 489269881 is about 787.9817526287.

The spelling of 489269881 in words is "four hundred eighty-nine million, two hundred sixty-nine thousand, eight hundred eighty-one".