487969 has 4 divisors (see below), whose sum is σ = 490644. Its totient is φ = 485296.

The previous prime is 487943. The next prime is 487973. The reversal of 487969 is 969784.

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

It can be written as a sum of positive squares in 2 ways, for example, as 390625 + 97344 = 625^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 487969 - 2⁹ = 487457 is a prime.

It is a super-2 number, since 2×487969² = 476227489922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (487979) 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, 1042 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (122661).

2⁴⁸⁷⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

487969 is a deficient number, since it is larger than the sum of its proper divisors (2675).

487969 is a wasteful number, since it uses less digits than its factorization.

487969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674.

The product of its digits is 108864, while the sum is 43.

The square root of 487969 is about 698.5477793251. The cubic root of 487969 is about 78.7282765309.

The spelling of 487969 in words is "four hundred eighty-seven thousand, nine hundred sixty-nine".