489709499 has 18 divisors (see below), whose sum is σ = 517584060. Its totient is φ = 463195656.

The previous prime is 489709469. The next prime is 489709501. The reversal of 489709499 is 994907984.

It is a happy number.

It is not a de Polignac number, because 489709499 - 2⁸ = 489709243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489709469) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7309064 + ... + 7309130.

It is an arithmetic number, because the mean of its divisors is an integer number (28754670).

Almost surely, 2^489709499 is an apocalyptic number.

489709499 is a deficient number, since it is larger than the sum of its proper divisors (27874561).

489709499 is an frugal number, since it uses more digits than its factorization.

489709499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 489709499 is about 22129.3808996095. The cubic root of 489709499 is about 788.2176873518.

Multiplying 489709499 by its sum of digits (59), we get a square (28892860441 = 169979²).

489709499 divided by its sum of digits (59) gives a square (8300161 = 2881²).

The spelling of 489709499 in words is "four hundred eighty-nine million, seven hundred nine thousand, four hundred ninety-nine".