489225281 has 4 divisors (see below), whose sum is σ = 514974000. Its totient is φ = 463476564.

The previous prime is 489225271. The next prime is 489225283. The reversal of 489225281 is 182522984.

It is a happy number.

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 489225281 - 2²⁶ = 422116417 is a prime.

It is a super-2 number, since 2×489225281² = 478682751139057922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489225283) 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, 12874331 + ... + 12874368.

It is an arithmetic number, because the mean of its divisors is an integer number (128743500).

Almost surely, 2^489225281 is an apocalyptic number.

It is an amenable number.

489225281 is a deficient number, since it is larger than the sum of its proper divisors (25748719).

489225281 is a wasteful number, since it uses less digits than its factorization.

489225281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25748718.

The product of its digits is 92160, while the sum is 41.

The square root of 489225281 is about 22118.4375804441. The cubic root of 489225281 is about 787.9578087514.

The spelling of 489225281 in words is "four hundred eighty-nine million, two hundred twenty-five thousand, two hundred eighty-one".