3478947 has 4 divisors (see below), whose sum is σ = 4638600. Its totient is φ = 2319296.

The previous prime is 3478939. The next prime is 3478949. The reversal of 3478947 is 7498743.

3478947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3478947 - 2³ = 3478939 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3478899 and 3478908.

It is not an unprimeable number, because it can be changed into a prime (3478949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579822 + ... + 579827.

It is an arithmetic number, because the mean of its divisors is an integer number (1159650).

Almost surely, 2^3478947 is an apocalyptic number.

3478947 is a deficient number, since it is larger than the sum of its proper divisors (1159653).

3478947 is a wasteful number, since it uses less digits than its factorization.

3478947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159652.

The product of its digits is 169344, while the sum is 42.

The square root of 3478947 is about 1865.1935556397. The cubic root of 3478947 is about 151.5244108842.

The spelling of 3478947 in words is "three million, four hundred seventy-eight thousand, nine hundred forty-seven".