489023790 has 16 divisors (see below), whose sum is σ = 1173657168. Its totient is φ = 130406336.

The previous prime is 489023749. The next prime is 489023797. The reversal of 489023790 is 97320984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489023797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8150367 + ... + 8150426.

It is an arithmetic number, because the mean of its divisors is an integer number (73353573).

Almost surely, 2^489023790 is an apocalyptic number.

489023790 is an abundant number, since it is smaller than the sum of its proper divisors (684633378).

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

489023790 is a wasteful number, since it uses less digits than its factorization.

489023790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16300803.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 489023790 is about 22113.8822914476. The cubic root of 489023790 is about 787.8496185069.

It can be divided in two parts, 4890 and 23790, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 489023790 in words is "four hundred eighty-nine million, twenty-three thousand, seven hundred ninety".