343853978 has 16 divisors (see below), whose sum is σ = 562490880. Its totient is φ = 156692016.

The previous prime is 343853969. The next prime is 343853981. The reversal of 343853978 is 879358343.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 81650 + ... + 85757.

It is an arithmetic number, because the mean of its divisors is an integer number (35155680).

Almost surely, 2^343853978 is an apocalyptic number.

343853978 is a deficient number, since it is larger than the sum of its proper divisors (218636902).

343853978 is a wasteful number, since it uses less digits than its factorization.

343853978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167501.

The product of its digits is 2177280, while the sum is 50.

The square root of 343853978 is about 18543.3000838578. The cubic root of 343853978 is about 700.5804559546.

The spelling of 343853978 in words is "three hundred forty-three million, eight hundred fifty-three thousand, nine hundred seventy-eight".