3478945 has 12 divisors (see below), whose sum is σ = 4267476. Its totient is φ = 2722400.

The previous prime is 3478939. The next prime is 3478949. The reversal of 3478945 is 5498743.

It can be written as a sum of positive squares in 2 ways, for example, as 2486929 + 992016 = 1577^2 + 996^2 .

It is not a de Polignac number, because 3478945 - 2¹⁷ = 3347873 is a prime.

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

It is a Duffinian number.

Its product of digits (120960) is a multiple of the sum of its prime divisors (189).

It is a junction number, because it is equal to n+sod(n) for n = 3478898 and 3478907.

It is a congruent number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34395 + ... + 34495.

It is an arithmetic number, because the mean of its divisors is an integer number (355623).

Almost surely, 2^3478945 is an apocalyptic number.

It is an amenable number.

3478945 is a deficient number, since it is larger than the sum of its proper divisors (788531).

3478945 is an equidigital number, since it uses as much as digits as its factorization.

3478945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 189 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 3478945 is about 1865.1930195023. The cubic root of 3478945 is about 151.5243818478.

The spelling of 3478945 in words is "three million, four hundred seventy-eight thousand, nine hundred forty-five".