340541009 has 4 divisors (see below), whose sum is σ = 358464240. Its totient is φ = 322617780.

The previous prime is 340540999. The next prime is 340541021. The reversal of 340541009 is 900145043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340541009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340541029) 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 3 ways as a sum of consecutive naturals, for example, 8961587 + ... + 8961624.

It is an arithmetic number, because the mean of its divisors is an integer number (89616060).

Almost surely, 2^340541009 is an apocalyptic number.

It is an amenable number.

340541009 is a deficient number, since it is larger than the sum of its proper divisors (17923231).

340541009 is a wasteful number, since it uses less digits than its factorization.

340541009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17923230.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 340541009 is about 18453.7532496780. The cubic root of 340541009 is about 698.3232035765.

The spelling of 340541009 in words is "three hundred forty million, five hundred forty-one thousand, nine".