349248569 has 2 divisors, whose sum is σ = 349248570. Its totient is φ = 349248568.

The previous prime is 349248547. The next prime is 349248631. The reversal of 349248569 is 965842943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349241344 + 7225 = 18688^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 349248569 - 2²⁸ = 80813113 is a prime.

It is a super-2 number, since 2×349248569² = 243949125897095522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (349241569) 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, 174624284 + 174624285.

It is an arithmetic number, because the mean of its divisors is an integer number (174624285).

Almost surely, 2^349248569 is an apocalyptic number.

It is an amenable number.

349248569 is a deficient number, since it is larger than the sum of its proper divisors (1).

349248569 is an equidigital number, since it uses as much as digits as its factorization.

349248569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 50.

The square root of 349248569 is about 18688.1933048650. The cubic root of 349248569 is about 704.2251729189.

The spelling of 349248569 in words is "three hundred forty-nine million, two hundred forty-eight thousand, five hundred sixty-nine".