340391407 has 8 divisors (see below), whose sum is σ = 346349360. Its totient is φ = 334445760.

The previous prime is 340391393. The next prime is 340391411. The reversal of 340391407 is 704193043.

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 340391407 - 2²³ = 332002799 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 (340391497) 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, 66019 + ... + 70987.

It is an arithmetic number, because the mean of its divisors is an integer number (43293670).

Almost surely, 2^340391407 is an apocalyptic number.

340391407 is a deficient number, since it is larger than the sum of its proper divisors (5957953).

340391407 is a wasteful number, since it uses less digits than its factorization.

340391407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 340391407 is about 18449.6993742446. The cubic root of 340391407 is about 698.2209292081.

The spelling of 340391407 in words is "three hundred forty million, three hundred ninety-one thousand, four hundred seven".