890055 has 32 divisors (see below), whose sum is σ = 1670400. Its totient is φ = 448416.

The previous prime is 890053. The next prime is 890063. The reversal of 890055 is 550098.

It is not a de Polignac number, because 890055 - 2¹ = 890053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2392 + ... + 2738.

It is an arithmetic number, because the mean of its divisors is an integer number (52200).

2⁸⁹⁰⁰⁵⁵ is an apocalyptic number.

890055 is a deficient number, since it is larger than the sum of its proper divisors (780345).

890055 is a wasteful number, since it uses less digits than its factorization.

890055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 890055 is about 943.4272626970. The cubic root of 890055 is about 96.1919985623.

The spelling of 890055 in words is "eight hundred ninety thousand, fifty-five".