3478509 has 6 divisors (see below), whose sum is σ = 5024526. Its totient is φ = 2319000.

The previous prime is 3478493. The next prime is 3478513. The reversal of 3478509 is 9058743.

It can be written as a sum of positive squares in only one way, i.e., 1814409 + 1664100 = 1347^2 + 1290^2 .

It is not a de Polignac number, because 3478509 - 2⁴ = 3478493 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3478009) 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 5 ways as a sum of consecutive naturals, for example, 193242 + ... + 193259.

It is an arithmetic number, because the mean of its divisors is an integer number (837421).

Almost surely, 2^3478509 is an apocalyptic number.

It is an amenable number.

3478509 is a deficient number, since it is larger than the sum of its proper divisors (1546017).

3478509 is a wasteful number, since it uses less digits than its factorization.

3478509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386507 (or 386504 counting only the distinct ones).

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

The square root of 3478509 is about 1865.0761378560. The cubic root of 3478509 is about 151.5180516346.

The spelling of 3478509 in words is "three million, four hundred seventy-eight thousand, five hundred nine".