350390069 has 2 divisors, whose sum is σ = 350390070. Its totient is φ = 350390068.

The previous prime is 350390017. The next prime is 350390081. The reversal of 350390069 is 960093053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330694225 + 19695844 = 18185^2 + 4438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-350390069 is a prime.

It is a super-2 number, since 2×350390069² = 245546400907649522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350390099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175195034 + 175195035.

It is an arithmetic number, because the mean of its divisors is an integer number (175195035).

Almost surely, 2^350390069 is an apocalyptic number.

It is an amenable number.

350390069 is a deficient number, since it is larger than the sum of its proper divisors (1).

350390069 is an equidigital number, since it uses as much as digits as its factorization.

350390069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 350390069 is about 18718.7090633943. The cubic root of 350390069 is about 704.9915791292.

The spelling of 350390069 in words is "three hundred fifty million, three hundred ninety thousand, sixty-nine".