350402221 has 8 divisors (see below), whose sum is σ = 378302904. Its totient is φ = 322636800.

The previous prime is 350402159. The next prime is 350402231. The reversal of 350402221 is 122204053.

It can be written as a sum of positive squares in 4 ways, for example, as 171217225 + 179184996 = 13085^2 + 13386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 350402221 - 2⁷ = 350402093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350402231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28396 + ... + 38821.

It is an arithmetic number, because the mean of its divisors is an integer number (47287863).

Almost surely, 2^350402221 is an apocalyptic number.

It is an amenable number.

350402221 is a deficient number, since it is larger than the sum of its proper divisors (27900683).

350402221 is a wasteful number, since it uses less digits than its factorization.

350402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67631.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 350402221 is about 18719.0336556137. The cubic root of 350402221 is about 704.9997290544. Note that the first 3 decimals are identical.

Adding to 350402221 its reverse (122204053), we get a palindrome (472606274).

The spelling of 350402221 in words is "three hundred fifty million, four hundred two thousand, two hundred twenty-one".