235923689 has 2 divisors, whose sum is σ = 235923690. Its totient is φ = 235923688.

The previous prime is 235923679. The next prime is 235923697. The reversal of 235923689 is 986329532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130142464 + 105781225 = 11408^2 + 10285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235923689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (235923629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117961844 + 117961845.

It is an arithmetic number, because the mean of its divisors is an integer number (117961845).

Almost surely, 2^235923689 is an apocalyptic number.

It is an amenable number.

235923689 is a deficient number, since it is larger than the sum of its proper divisors (1).

235923689 is an equidigital number, since it uses as much as digits as its factorization.

235923689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 235923689 is about 15359.8075834302. The cubic root of 235923689 is about 617.9080456881.

The spelling of 235923689 in words is "two hundred thirty-five million, nine hundred twenty-three thousand, six hundred eighty-nine".