233638969 has 2 divisors, whose sum is σ = 233638970. Its totient is φ = 233638968.

The previous prime is 233638931. The next prime is 233638981. The reversal of 233638969 is 969836332.

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., 233631225 + 7744 = 15285^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 233638969 - 2¹⁹ = 233114681 is a prime.

It is a super-2 number, since 2×233638969² = 109174335670765922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (233632969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116819484 + 116819485.

It is an arithmetic number, because the mean of its divisors is an integer number (116819485).

Almost surely, 2^233638969 is an apocalyptic number.

It is an amenable number.

233638969 is a deficient number, since it is larger than the sum of its proper divisors (1).

233638969 is an equidigital number, since it uses as much as digits as its factorization.

233638969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 49.

The square root of 233638969 is about 15285.2533181495. The cubic root of 233638969 is about 615.9069343085.

The spelling of 233638969 in words is "two hundred thirty-three million, six hundred thirty-eight thousand, nine hundred sixty-nine".