352688389 has 2 divisors, whose sum is σ = 352688390. Its totient is φ = 352688388.

The previous prime is 352688387. The next prime is 352688407. The reversal of 352688389 is 983886253.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316484100 + 36204289 = 17790^2 + 6017^2 .

It is a cyclic number.

It is not a de Polignac number, because 352688389 - 2¹ = 352688387 is a prime.

Together with 352688387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352688381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176344194 + 176344195.

It is an arithmetic number, because the mean of its divisors is an integer number (176344195).

Almost surely, 2^352688389 is an apocalyptic number.

It is an amenable number.

352688389 is a deficient number, since it is larger than the sum of its proper divisors (1).

352688389 is an equidigital number, since it uses as much as digits as its factorization.

352688389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The square root of 352688389 is about 18779.9997071352. Note that the first 3 decimals coincide. The cubic root of 352688389 is about 706.5296425268.

The spelling of 352688389 in words is "three hundred fifty-two million, six hundred eighty-eight thousand, three hundred eighty-nine".