899090 has 8 divisors (see below), whose sum is σ = 1618380. Its totient is φ = 359632.

The previous prime is 899069. The next prime is 899123. The reversal of 899090 is 90998.

It can be written as a sum of positive squares in 2 ways, for example, as 829921 + 69169 = 911^2 + 263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 899090.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44945 + ... + 44964.

2⁸⁹⁹⁰⁹⁰ is an apocalyptic number.

899090 is a deficient number, since it is larger than the sum of its proper divisors (719290).

899090 is a wasteful number, since it uses less digits than its factorization.

899090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89916.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 899090 is about 948.2035646421. The cubic root of 899090 is about 96.5163869189.

The spelling of 899090 in words is "eight hundred ninety-nine thousand, ninety".