213770089 has 4 divisors (see below), whose sum is σ = 230213956. Its totient is φ = 197326224.

The previous prime is 213770077. The next prime is 213770113. The reversal of 213770089 is 980077312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107329600 + 106440489 = 10360^2 + 10317^2 .

It is a cyclic number.

It is not a de Polignac number, because 213770089 - 2⁷ = 213769961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213770009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8221914 + ... + 8221939.

It is an arithmetic number, because the mean of its divisors is an integer number (57553489).

Almost surely, 2^213770089 is an apocalyptic number.

It is an amenable number.

213770089 is a deficient number, since it is larger than the sum of its proper divisors (16443867).

213770089 is a wasteful number, since it uses less digits than its factorization.

213770089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443866.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 213770089 is about 14620.8785303757. The cubic root of 213770089 is about 597.9281213592.

The spelling of 213770089 in words is "two hundred thirteen million, seven hundred seventy thousand, eighty-nine".