340509406 has 8 divisors (see below), whose sum is σ = 510870960. Its totient is φ = 170219088.

The previous prime is 340509391. The next prime is 340509413. The reversal of 340509406 is 604905043.

340509406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3586 + ... + 26341.

It is an arithmetic number, because the mean of its divisors is an integer number (63858870).

Almost surely, 2^340509406 is an apocalyptic number.

340509406 is a deficient number, since it is larger than the sum of its proper divisors (170361554).

340509406 is a wasteful number, since it uses less digits than its factorization.

340509406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35618.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 340509406 is about 18452.8969541370. The cubic root of 340509406 is about 698.3016009008.

The spelling of 340509406 in words is "three hundred forty million, five hundred nine thousand, four hundred six".