235243489 has 4 divisors (see below), whose sum is σ = 253339156. Its totient is φ = 217147824.

The previous prime is 235243487. The next prime is 235243537. The reversal of 235243489 is 984342532.

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 58140625 + 177102864 = 7625^2 + 13308^2 .

It is a cyclic number.

It is not a de Polignac number, because 235243489 - 2¹ = 235243487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235243487) 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 3 ways as a sum of consecutive naturals, for example, 9047814 + ... + 9047839.

It is an arithmetic number, because the mean of its divisors is an integer number (63334789).

Almost surely, 2^235243489 is an apocalyptic number.

It is an amenable number.

235243489 is a deficient number, since it is larger than the sum of its proper divisors (18095667).

235243489 is a wasteful number, since it uses less digits than its factorization.

235243489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18095666.

The product of its digits is 207360, while the sum is 40.

The square root of 235243489 is about 15337.6493961754. The cubic root of 235243489 is about 617.3136364944.

The spelling of 235243489 in words is "two hundred thirty-five million, two hundred forty-three thousand, four hundred eighty-nine".