489905390 has 16 divisors (see below), whose sum is σ = 949663008. Its totient is φ = 180888096.

The previous prime is 489905347. The next prime is 489905411. The reversal of 489905390 is 93509984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1884122 + ... + 1884381.

It is an arithmetic number, because the mean of its divisors is an integer number (59353938).

Almost surely, 2^489905390 is an apocalyptic number.

489905390 is a deficient number, since it is larger than the sum of its proper divisors (459757618).

489905390 is a wasteful number, since it uses less digits than its factorization.

489905390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768523.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 489905390 is about 22133.8064959464. The cubic root of 489905390 is about 788.3227728960.

The spelling of 489905390 in words is "four hundred eighty-nine million, nine hundred five thousand, three hundred ninety".