855490 has 8 divisors (see below), whose sum is σ = 1539900. Its totient is φ = 342192.

The previous prime is 855467. The next prime is 855499. The reversal of 855490 is 94558.

855490 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 720801 + 134689 = 849^2 + 367^2 .

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

It is not an unprimeable number, because it can be changed into a prime (855499) 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, 42765 + ... + 42784.

2⁸⁵⁵⁴⁹⁰ is an apocalyptic number.

855490 is a deficient number, since it is larger than the sum of its proper divisors (684410).

855490 is a wasteful number, since it uses less digits than its factorization.

855490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85556.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 855490 is about 924.9270241484. The cubic root of 855490 is about 94.9303274931.

The spelling of 855490 in words is "eight hundred fifty-five thousand, four hundred ninety".