340555729 has 8 divisors (see below), whose sum is σ = 358272000. Its totient is φ = 323237712.

The previous prime is 340555703. The next prime is 340555759. The reversal of 340555729 is 927555043.

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

It is not a de Polignac number, because 340555729 - 2⁵ = 340555697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340555691 and 340555700.

It is not an unprimeable number, because it can be changed into a prime (340555759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97809 + ... + 101230.

It is an arithmetic number, because the mean of its divisors is an integer number (44784000).

Almost surely, 2^340555729 is an apocalyptic number.

It is an amenable number.

340555729 is a deficient number, since it is larger than the sum of its proper divisors (17716271).

340555729 is a wasteful number, since it uses less digits than its factorization.

340555729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199127.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 340555729 is about 18454.1520802230. The cubic root of 340555729 is about 698.3332651835. Note that the first 3 decimals are identical.

The spelling of 340555729 in words is "three hundred forty million, five hundred fifty-five thousand, seven hundred twenty-nine".