489891402 has 384 divisors, whose sum is σ = 1585059840. Its totient is φ = 109175040.

The previous prime is 489891401. The next prime is 489891407. The reversal of 489891402 is 204198984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489891401) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9243208 + ... + 9243260.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^489891402 is an apocalyptic number.

489891402 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 489891402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792529920).

489891402 is an abundant number, since it is smaller than the sum of its proper divisors (1095168438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489891402 is a wasteful number, since it uses less digits than its factorization.

489891402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 489891402 is about 22133.4905064701. The cubic root of 489891402 is about 788.3152699752.

The spelling of 489891402 in words is "four hundred eighty-nine million, eight hundred ninety-one thousand, four hundred two".