350889221 has 2 divisors, whose sum is σ = 350889222. Its totient is φ = 350889220.

The previous prime is 350889181. The next prime is 350889233. The reversal of 350889221 is 122988053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305865121 + 45024100 = 17489^2 + 6710^2 .

It is an emirp because it is prime and its reverse (122988053) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 350889221 - 2⁶ = 350889157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350888221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175444610 + 175444611.

It is an arithmetic number, because the mean of its divisors is an integer number (175444611).

Almost surely, 2^350889221 is an apocalyptic number.

It is an amenable number.

350889221 is a deficient number, since it is larger than the sum of its proper divisors (1).

350889221 is an equidigital number, since it uses as much as digits as its factorization.

350889221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 350889221 is about 18732.0372890938. The cubic root of 350889221 is about 705.3261881073.

It can be divided in two parts, 3508 and 89221, that added together give a palindrome (92729).

The spelling of 350889221 in words is "three hundred fifty million, eight hundred eighty-nine thousand, two hundred twenty-one".