340144447 has 4 divisors (see below), whose sum is σ = 354933360. Its totient is φ = 325355536.

The previous prime is 340144423. The next prime is 340144459. The reversal of 340144447 is 744441043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744441043 = 2129 ⋅349667.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340144447 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 (340144417) 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, 7394422 + ... + 7394467.

It is an arithmetic number, because the mean of its divisors is an integer number (88733340).

Almost surely, 2^340144447 is an apocalyptic number.

340144447 is a deficient number, since it is larger than the sum of its proper divisors (14788913).

340144447 is a wasteful number, since it uses less digits than its factorization.

340144447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14788912.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 340144447 is about 18443.0053678895. The cubic root of 340144447 is about 698.0520311347.

The spelling of 340144447 in words is "three hundred forty million, one hundred forty-four thousand, four hundred forty-seven".