340494547 has 4 divisors (see below), whose sum is σ = 360523656. Its totient is φ = 320465440.

The previous prime is 340494529. The next prime is 340494587. The reversal of 340494547 is 745494043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745494043 = 7 ⋅106499149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340494547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340494587) 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, 10014529 + ... + 10014562.

It is an arithmetic number, because the mean of its divisors is an integer number (90130914).

Almost surely, 2^340494547 is an apocalyptic number.

340494547 is a deficient number, since it is larger than the sum of its proper divisors (20029109).

340494547 is a wasteful number, since it uses less digits than its factorization.

340494547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20029108.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 340494547 is about 18452.4943300357. The cubic root of 340494547 is about 698.2914433601.

The spelling of 340494547 in words is "three hundred forty million, four hundred ninety-four thousand, five hundred forty-seven".