233993869 has 2 divisors, whose sum is σ = 233993870. Its totient is φ = 233993868.

The previous prime is 233993863. The next prime is 233993923. The reversal of 233993869 is 968399332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230644969 + 3348900 = 15187^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 233993869 - 2⁷ = 233993741 is a prime.

It is a super-2 number, since 2×233993869² = 109506261459178322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233993863) 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 as a sum of consecutive naturals, namely, 116996934 + 116996935.

It is an arithmetic number, because the mean of its divisors is an integer number (116996935).

Almost surely, 2^233993869 is an apocalyptic number.

It is an amenable number.

233993869 is a deficient number, since it is larger than the sum of its proper divisors (1).

233993869 is an equidigital number, since it uses as much as digits as its factorization.

233993869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 52.

The square root of 233993869 is about 15296.8581414616. The cubic root of 233993869 is about 616.2186328626.

The spelling of 233993869 in words is "two hundred thirty-three million, nine hundred ninety-three thousand, eight hundred sixty-nine".