347839945 has 8 divisors (see below), whose sum is σ = 419527944. Its totient is φ = 276858624.

The previous prime is 347839927. The next prime is 347839967. The reversal of 347839945 is 549938743.

It can be written as a sum of positive squares in 4 ways, for example, as 144264121 + 203575824 = 12011^2 + 14268^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 347839945 - 2⁵ = 347839913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 347839892 and 347839901.

It is an unprimeable number.

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, 175584 + ... + 177553.

It is an arithmetic number, because the mean of its divisors is an integer number (52440993).

Almost surely, 2^347839945 is an apocalyptic number.

It is an amenable number.

347839945 is a deficient number, since it is larger than the sum of its proper divisors (71687999).

347839945 is a wasteful number, since it uses less digits than its factorization.

347839945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353339.

The product of its digits is 3265920, while the sum is 52.

The square root of 347839945 is about 18650.4676885058. The cubic root of 347839945 is about 703.2771135455.

The spelling of 347839945 in words is "three hundred forty-seven million, eight hundred thirty-nine thousand, nine hundred forty-five".