469987 has 4 divisors (see below), whose sum is σ = 537136. Its totient is φ = 402840.

The previous prime is 469979. The next prime is 469993. The reversal of 469987 is 789964.

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 469987 - 2³ = 469979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (469907) 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, 33564 + ... + 33577.

It is an arithmetic number, because the mean of its divisors is an integer number (134284).

2⁴⁶⁹⁹⁸⁷ is an apocalyptic number.

469987 is a deficient number, since it is larger than the sum of its proper divisors (67149).

469987 is an equidigital number, since it uses as much as digits as its factorization.

469987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67148.

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

The square root of 469987 is about 685.5559787501. Note that the first 3 decimals coincide. The cubic root of 469987 is about 77.7490841247.

The spelling of 469987 in words is "four hundred sixty-nine thousand, nine hundred eighty-seven".