347421247 has 16 divisors (see below), whose sum is σ = 376289280. Its totient is φ = 319989600.

The previous prime is 347421229. The next prime is 347421281. The reversal of 347421247 is 742124743.

It is a cyclic number.

It is not a de Polignac number, because 347421247 - 2⁷ = 347421119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347421287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61108 + ... + 66550.

It is an arithmetic number, because the mean of its divisors is an integer number (23518080).

Almost surely, 2^347421247 is an apocalyptic number.

347421247 is a deficient number, since it is larger than the sum of its proper divisors (28868033).

347421247 is a wasteful number, since it uses less digits than its factorization.

347421247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574.

The product of its digits is 37632, while the sum is 34.

The square root of 347421247 is about 18639.2394426382. The cubic root of 347421247 is about 702.9948199671.

The spelling of 347421247 in words is "three hundred forty-seven million, four hundred twenty-one thousand, two hundred forty-seven".