233779993 has 2 divisors, whose sum is σ = 233779994. Its totient is φ = 233779992.

The previous prime is 233779969. The next prime is 233780051. The reversal of 233779993 is 399977332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189117504 + 44662489 = 13752^2 + 6683^2 .

It is a cyclic number.

It is not a de Polignac number, because 233779993 - 2²⁵ = 200225561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233779993.

It is not a weakly prime, because it can be changed into another prime (233779193) 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, 116889996 + 116889997.

It is an arithmetic number, because the mean of its divisors is an integer number (116889997).

Almost surely, 2^233779993 is an apocalyptic number.

It is an amenable number.

233779993 is a deficient number, since it is larger than the sum of its proper divisors (1).

233779993 is an equidigital number, since it uses as much as digits as its factorization.

233779993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1928934, while the sum is 52.

The square root of 233779993 is about 15289.8656959438. The cubic root of 233779993 is about 616.0308294361.

The spelling of 233779993 in words is "two hundred thirty-three million, seven hundred seventy-nine thousand, nine hundred ninety-three".