340385747 has 8 divisors (see below), whose sum is σ = 388132416. Its totient is φ = 295719552.

The previous prime is 340385729. The next prime is 340385753. The reversal of 340385747 is 747583043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340385747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340385777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769883 + ... + 770324.

It is an arithmetic number, because the mean of its divisors is an integer number (48516552).

Almost surely, 2^340385747 is an apocalyptic number.

340385747 is a deficient number, since it is larger than the sum of its proper divisors (47746669).

340385747 is a wasteful number, since it uses less digits than its factorization.

340385747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540237.

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 340385747 is about 18449.5459835737. The cubic root of 340385747 is about 698.2170592001.

The spelling of 340385747 in words is "three hundred forty million, three hundred eighty-five thousand, seven hundred forty-seven".