349331947 has 2 divisors, whose sum is σ = 349331948. Its totient is φ = 349331946.

The previous prime is 349331909. The next prime is 349331987. The reversal of 349331947 is 749133943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349331947 - 2⁷ = 349331819 is a prime.

It is not a weakly prime, because it can be changed into another prime (349331987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174665973 + 174665974.

It is an arithmetic number, because the mean of its divisors is an integer number (174665974).

Almost surely, 2^349331947 is an apocalyptic number.

349331947 is a deficient number, since it is larger than the sum of its proper divisors (1).

349331947 is an equidigital number, since it uses as much as digits as its factorization.

349331947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The square root of 349331947 is about 18690.4239384772. The cubic root of 349331947 is about 704.2812096214.

The spelling of 349331947 in words is "three hundred forty-nine million, three hundred thirty-one thousand, nine hundred forty-seven".