340440109 has 4 divisors (see below), whose sum is σ = 351422080. Its totient is φ = 329458140.

The previous prime is 340440103. The next prime is 340440127. The reversal of 340440109 is 901044043.

It is a happy number.

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 not a de Polignac number, because 340440109 - 2²³ = 332051501 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 (340440103) 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, 5490939 + ... + 5491000.

It is an arithmetic number, because the mean of its divisors is an integer number (87855520).

Almost surely, 2^340440109 is an apocalyptic number.

It is an amenable number.

340440109 is a deficient number, since it is larger than the sum of its proper divisors (10981971).

340440109 is a wasteful number, since it uses less digits than its factorization.

340440109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10981970.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 340440109 is about 18451.0191859420. The cubic root of 340440109 is about 698.2542272814.

The spelling of 340440109 in words is "three hundred forty million, four hundred forty thousand, one hundred nine".