340407 has 12 divisors (see below), whose sum is σ = 497640. Its totient is φ = 224208.

The previous prime is 340397. The next prime is 340409. The reversal of 340407 is 704043.

340407 = T₁₈ + T₁₉ + ... + T₁₂₆.

340407 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 340407 - 2¹⁵ = 307639 is a prime.

340407 is strictly pandigital in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 340407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340407.

It is not an unprimeable number, because it can be changed into a prime (340409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (41470).

2³⁴⁰⁴⁰⁷ is an apocalyptic number.

340407 is a deficient number, since it is larger than the sum of its proper divisors (157233).

340407 is a wasteful number, since it uses less digits than its factorization.

340407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 340407 is about 583.4440847245. Note that the first 3 decimals coincide. The cubic root of 340407 is about 69.8231590653.

It can be divided in two parts, 340 and 407, that added together give a palindrome (747).

The spelling of 340407 in words is "three hundred forty thousand, four hundred seven", and thus it is an iban number.