340239463 has 4 divisors (see below), whose sum is σ = 340725528. Its totient is φ = 339753400.

The previous prime is 340239421. The next prime is 340239469. The reversal of 340239463 is 364932043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364932043 = 7 ⋅52133149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340239463 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 (340239469) 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, 241981 + ... + 243382.

It is an arithmetic number, because the mean of its divisors is an integer number (85181382).

Almost surely, 2^340239463 is an apocalyptic number.

340239463 is a deficient number, since it is larger than the sum of its proper divisors (486065).

340239463 is an equidigital number, since it uses as much as digits as its factorization.

340239463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486064.

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 340239463 is about 18445.5811239440. The cubic root of 340239463 is about 698.1170230693.

The spelling of 340239463 in words is "three hundred forty million, two hundred thirty-nine thousand, four hundred sixty-three".