234199989 has 6 divisors (see below), whose sum is σ = 338288886. Its totient is φ = 156133320.

The previous prime is 234199981. The next prime is 234199997. The reversal of 234199989 is 989991432.

It is an interprime number because it is at equal distance from previous prime (234199981) and next prime (234199997).

It can be written as a sum of positive squares in only one way, i.e., 225450225 + 8749764 = 15015^2 + 2958^2 .

It is not a de Polignac number, because 234199989 - 2³ = 234199981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234199981) 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 5 ways as a sum of consecutive naturals, for example, 13011102 + ... + 13011119.

It is an arithmetic number, because the mean of its divisors is an integer number (56381481).

Almost surely, 2^234199989 is an apocalyptic number.

It is an amenable number.

234199989 is a deficient number, since it is larger than the sum of its proper divisors (104088897).

234199989 is a wasteful number, since it uses less digits than its factorization.

234199989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26022227 (or 26022224 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 234199989 is about 15303.5939896483. The cubic root of 234199989 is about 616.3995175278.

The spelling of 234199989 in words is "two hundred thirty-four million, one hundred ninety-nine thousand, nine hundred eighty-nine".