489087251 has 4 divisors (see below), whose sum is σ = 493574400. Its totient is φ = 484600104.

The previous prime is 489087241. The next prime is 489087293. The reversal of 489087251 is 152780984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489087251 - 2¹⁴ = 489070867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489087241) 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, 2243411 + ... + 2243628.

It is an arithmetic number, because the mean of its divisors is an integer number (123393600).

Almost surely, 2^489087251 is an apocalyptic number.

489087251 is a deficient number, since it is larger than the sum of its proper divisors (4487149).

489087251 is a wasteful number, since it uses less digits than its factorization.

489087251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487148.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 489087251 is about 22115.3171128067. The cubic root of 489087251 is about 787.8836969867.

The spelling of 489087251 in words is "four hundred eighty-nine million, eighty-seven thousand, two hundred fifty-one".