343784721394 has 8 divisors (see below), whose sum is σ = 515680219008. Its totient is φ = 171891315060.

The previous prime is 343784721391. The next prime is 343784721439. The reversal of 343784721394 is 493127487343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (343784721391) 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 3 ways as a sum of consecutive naturals, for example, 12042 + ... + 829285.

It is an arithmetic number, because the mean of its divisors is an integer number (64460027376).

Almost surely, 2^343784721394 is an apocalyptic number.

343784721394 is a deficient number, since it is larger than the sum of its proper divisors (171895497614).

343784721394 is a wasteful number, since it uses less digits than its factorization.

343784721394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045640.

The product of its digits is 12192768, while the sum is 55.

The spelling of 343784721394 in words is "three hundred forty-three billion, seven hundred eighty-four million, seven hundred twenty-one thousand, three hundred ninety-four".