349203947 has 2 divisors, whose sum is σ = 349203948. Its totient is φ = 349203946.

The previous prime is 349203941. The next prime is 349203997. The reversal of 349203947 is 749302943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349203947 - 2⁸ = 349203691 is a prime.

It is not a weakly prime, because it can be changed into another prime (349203941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174601973 + 174601974.

It is an arithmetic number, because the mean of its divisors is an integer number (174601974).

Almost surely, 2^349203947 is an apocalyptic number.

349203947 is a deficient number, since it is larger than the sum of its proper divisors (1).

349203947 is an equidigital number, since it uses as much as digits as its factorization.

349203947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 349203947 is about 18686.9994113555. Note that the first 3 decimals coincide. The cubic root of 349203947 is about 704.1951796927.

The spelling of 349203947 in words is "three hundred forty-nine million, two hundred three thousand, nine hundred forty-seven".