343909378 has 8 divisors (see below), whose sum is σ = 520872768. Its totient is φ = 170285124.

The previous prime is 343909369. The next prime is 343909393. The reversal of 343909378 is 873909343.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834526 + ... + 834937.

It is an arithmetic number, because the mean of its divisors is an integer number (65109096).

Almost surely, 2^343909378 is an apocalyptic number.

343909378 is a deficient number, since it is larger than the sum of its proper divisors (176963390).

343909378 is a wasteful number, since it uses less digits than its factorization.

343909378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669568.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 343909378 is about 18544.7938246830. The cubic root of 343909378 is about 700.6180785847.

The spelling of 343909378 in words is "three hundred forty-three million, nine hundred nine thousand, three hundred seventy-eight".