489371890 has 64 divisors (see below), whose sum is σ = 1056503808. Its totient is φ = 159667200.

The previous prime is 489371881. The next prime is 489371893. The reversal of 489371890 is 98173984.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (489371893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130522 + ... + 134218.

It is an arithmetic number, because the mean of its divisors is an integer number (16507872).

Almost surely, 2^489371890 is an apocalyptic number.

489371890 is an abundant number, since it is smaller than the sum of its proper divisors (567131918).

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

489371890 is a wasteful number, since it uses less digits than its factorization.

489371890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 489371890 is about 22121.7515129341. The cubic root of 489371890 is about 788.0365115311.

The spelling of 489371890 in words is "four hundred eighty-nine million, three hundred seventy-one thousand, eight hundred ninety".