349254991 has 2 divisors, whose sum is σ = 349254992. Its totient is φ = 349254990.

The previous prime is 349254967. The next prime is 349255003. The reversal of 349254991 is 199452943.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 349254991 - 2¹⁹ = 348730703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349252991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174627495 + 174627496.

It is an arithmetic number, because the mean of its divisors is an integer number (174627496).

Almost surely, 2^349254991 is an apocalyptic number.

349254991 is a deficient number, since it is larger than the sum of its proper divisors (1).

349254991 is an equidigital number, since it uses as much as digits as its factorization.

349254991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 349254991 is about 18688.3651237876. The cubic root of 349254991 is about 704.2294893349.

The spelling of 349254991 in words is "three hundred forty-nine million, two hundred fifty-four thousand, nine hundred ninety-one".