213734889 has 8 divisors (see below), whose sum is σ = 316644320. Its totient is φ = 142489908.

The previous prime is 213734881. The next prime is 213734893. The reversal of 213734889 is 988437312.

It is not a de Polignac number, because 213734889 - 2³ = 213734881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213734881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3958027 + ... + 3958080.

It is an arithmetic number, because the mean of its divisors is an integer number (39580540).

Almost surely, 2^213734889 is an apocalyptic number.

It is an amenable number.

213734889 is a deficient number, since it is larger than the sum of its proper divisors (102909431).

213734889 is an equidigital number, since it uses as much as digits as its factorization.

213734889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7916116 (or 7916110 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 213734889 is about 14619.6747227837. The cubic root of 213734889 is about 597.8953007008.

It can be divided in two parts, 21373 and 4889, that added together give a palindrome (26262).

The spelling of 213734889 in words is "two hundred thirteen million, seven hundred thirty-four thousand, eight hundred eighty-nine".