869490 has 24 divisors (see below), whose sum is σ = 2260908. Its totient is φ = 231840.

The previous prime is 869489. The next prime is 869501. The reversal of 869490 is 94968.

It can be written as a sum of positive squares in 2 ways, for example, as 700569 + 168921 = 837^2 + 411^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4741 + ... + 4920.

2⁸⁶⁹⁴⁹⁰ is an apocalyptic number.

869490 is an abundant number, since it is smaller than the sum of its proper divisors (1391418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869490 is a wasteful number, since it uses less digits than its factorization.

869490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9674 (or 9671 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 869490 is about 932.4644765352. The cubic root of 869490 is about 95.4453695570.

The spelling of 869490 in words is "eight hundred sixty-nine thousand, four hundred ninety".