340709407 has 4 divisors (see below), whose sum is σ = 340761600. Its totient is φ = 340657216.

The previous prime is 340709389. The next prime is 340709417. The reversal of 340709407 is 704907043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340709407 - 2¹⁹ = 340185119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340709417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14623 + ... + 29920.

It is an arithmetic number, because the mean of its divisors is an integer number (85190400).

Almost surely, 2^340709407 is an apocalyptic number.

340709407 is a deficient number, since it is larger than the sum of its proper divisors (52193).

340709407 is an equidigital number, since it uses as much as digits as its factorization.

340709407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52192.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 340709407 is about 18458.3153890056. The cubic root of 340709407 is about 698.4382918715.

The spelling of 340709407 in words is "three hundred forty million, seven hundred nine thousand, four hundred seven".