349456691 has 2 divisors, whose sum is σ = 349456692. Its totient is φ = 349456690.

The previous prime is 349456673. The next prime is 349456727. The reversal of 349456691 is 196654943.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (196654943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349456691 - 2²⁶ = 282347827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349456651) 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, 174728345 + 174728346.

It is an arithmetic number, because the mean of its divisors is an integer number (174728346).

Almost surely, 2^349456691 is an apocalyptic number.

349456691 is a deficient number, since it is larger than the sum of its proper divisors (1).

349456691 is an equidigital number, since it uses as much as digits as its factorization.

349456691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 47.

The square root of 349456691 is about 18693.7607505820. The cubic root of 349456691 is about 704.3650309463.

The spelling of 349456691 in words is "three hundred forty-nine million, four hundred fifty-six thousand, six hundred ninety-one".