3478905 has 24 divisors (see below), whose sum is σ = 6099912. Its totient is φ = 1833984.

The previous prime is 3478903. The next prime is 3478907. The reversal of 3478905 is 5098743.

It is an interprime number because it is at equal distance from previous prime (3478903) and next prime (3478907).

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 3196944 = 531^2 + 1788^2 .

It is not a de Polignac number, because 3478905 - 2¹ = 3478903 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3478905.

It is not an unprimeable number, because it can be changed into a prime (3478901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3967 + ... + 4763.

It is an arithmetic number, because the mean of its divisors is an integer number (254163).

Almost surely, 2^3478905 is an apocalyptic number.

It is an amenable number.

3478905 is a deficient number, since it is larger than the sum of its proper divisors (2621007).

3478905 is a wasteful number, since it uses less digits than its factorization.

3478905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3478905 is about 1865.1822967206. The cubic root of 3478905 is about 151.5238011163.

The spelling of 3478905 in words is "three million, four hundred seventy-eight thousand, nine hundred five".