232099909 has 2 divisors, whose sum is σ = 232099910. Its totient is φ = 232099908.

The previous prime is 232099897. The next prime is 232099957. The reversal of 232099909 is 909990232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231709284 + 390625 = 15222^2 + 625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232099909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232099999) 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 as a sum of consecutive naturals, namely, 116049954 + 116049955.

It is an arithmetic number, because the mean of its divisors is an integer number (116049955).

Almost surely, 2^232099909 is an apocalyptic number.

It is an amenable number.

232099909 is a deficient number, since it is larger than the sum of its proper divisors (1).

232099909 is an equidigital number, since it uses as much as digits as its factorization.

232099909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 232099909 is about 15234.8255323125. The cubic root of 232099909 is about 614.5515571056.

The spelling of 232099909 in words is "two hundred thirty-two million, ninety-nine thousand, nine hundred nine".