489987361 has 4 divisors (see below), whose sum is σ = 500412672. Its totient is φ = 479562052.

The previous prime is 489987359. The next prime is 489987383. The reversal of 489987361 is 163789984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489987361 - 2¹ = 489987359 is a prime.

It is a super-2 number, since 2×489987361² = 480175227879488642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489987341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5212585 + ... + 5212678.

It is an arithmetic number, because the mean of its divisors is an integer number (125103168).

Almost surely, 2^489987361 is an apocalyptic number.

It is an amenable number.

489987361 is a deficient number, since it is larger than the sum of its proper divisors (10425311).

489987361 is a wasteful number, since it uses less digits than its factorization.

489987361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425310.

The product of its digits is 2612736, while the sum is 55.

The square root of 489987361 is about 22135.6581334281. The cubic root of 489987361 is about 788.3667378489.

The spelling of 489987361 in words is "four hundred eighty-nine million, nine hundred eighty-seven thousand, three hundred sixty-one".