890540189 has 16 divisors (see below), whose sum is σ = 1175596416. Its totient is φ = 653107200.

The previous prime is 890540177. The next prime is 890540201. The reversal of 890540189 is 981045098.

It is an interprime number because it is at equal distance from previous prime (890540177) and next prime (890540201).

It is a cyclic number.

It is not a de Polignac number, because 890540189 - 2⁴ = 890540173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890540789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338852 + ... + 341469.

It is an arithmetic number, because the mean of its divisors is an integer number (73474776).

Almost surely, 2^890540189 is an apocalyptic number.

It is an amenable number.

890540189 is a deficient number, since it is larger than the sum of its proper divisors (285056227).

890540189 is a wasteful number, since it uses less digits than its factorization.

890540189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680356.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 890540189 is about 29841.9199952014. The cubic root of 890540189 is about 962.0947419452.

It can be divided in two parts, 8905 and 40189, that added together give a palindrome (49094).

The spelling of 890540189 in words is "eight hundred ninety million, five hundred forty thousand, one hundred eighty-nine".