340979209 has 8 divisors (see below), whose sum is σ = 356063040. Its totient is φ = 325916976.

The previous prime is 340979167. The next prime is 340979213. The reversal of 340979209 is 902979043.

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

It is a cyclic number.

It is not a de Polignac number, because 340979209 - 2²¹ = 338882057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340979269) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32659 + ... + 41815.

It is an arithmetic number, because the mean of its divisors is an integer number (44507880).

Almost surely, 2^340979209 is an apocalyptic number.

It is an amenable number.

340979209 is a deficient number, since it is larger than the sum of its proper divisors (15083831).

340979209 is a wasteful number, since it uses less digits than its factorization.

340979209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10799.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 340979209 is about 18465.6223561514. The cubic root of 340979209 is about 698.6226037075.

The spelling of 340979209 in words is "three hundred forty million, nine hundred seventy-nine thousand, two hundred nine".