489129531 has 16 divisors (see below), whose sum is σ = 712454400. Its totient is φ = 296028320.

The previous prime is 489129499. The next prime is 489129539. The reversal of 489129531 is 135921984.

It is a cyclic number.

It is not a de Polignac number, because 489129531 - 2⁵ = 489129499 is a prime.

It is a super-2 number, since 2×489129531² = 478495396192559922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (489129539) 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, 14545 + ... + 34493.

It is an arithmetic number, because the mean of its divisors is an integer number (44528400).

Almost surely, 2^489129531 is an apocalyptic number.

489129531 is a deficient number, since it is larger than the sum of its proper divisors (223324869).

489129531 is a wasteful number, since it uses less digits than its factorization.

489129531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20706.

The product of its digits is 77760, while the sum is 42.

The square root of 489129531 is about 22116.2729907188. The cubic root of 489129531 is about 787.9063996591.

The spelling of 489129531 in words is "four hundred eighty-nine million, one hundred twenty-nine thousand, five hundred thirty-one".