345704839 has 4 divisors (see below), whose sum is σ = 356856640. Its totient is φ = 334553040.

The previous prime is 345704833. The next prime is 345704851. The reversal of 345704839 is 938407543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938407543 = 10303 ⋅91081.

It is a cyclic number.

It is not a de Polignac number, because 345704839 - 2³ = 345704831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345704795 and 345704804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345704831) 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, 5575854 + ... + 5575915.

It is an arithmetic number, because the mean of its divisors is an integer number (89214160).

Almost surely, 2^345704839 is an apocalyptic number.

345704839 is a deficient number, since it is larger than the sum of its proper divisors (11151801).

345704839 is a wasteful number, since it uses less digits than its factorization.

345704839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151800.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 345704839 is about 18593.1395681310. The cubic root of 345704839 is about 701.8352108987.

The spelling of 345704839 in words is "three hundred forty-five million, seven hundred four thousand, eight hundred thirty-nine".