3478609 has 4 divisors (see below), whose sum is σ = 3492720. Its totient is φ = 3464500.

The previous prime is 3478597. The next prime is 3478621. The reversal of 3478609 is 9068743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9068743 = 43 ⋅210901.

It is an interprime number because it is at equal distance from previous prime (3478597) and next prime (3478621).

It is a cyclic number.

It is not a de Polignac number, because 3478609 - 2¹³ = 3470417 is a prime.

It is a Duffinian number.

3478609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3478679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6679 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (873180).

Almost surely, 2^3478609 is an apocalyptic number.

It is an amenable number.

3478609 is a deficient number, since it is larger than the sum of its proper divisors (14111).

3478609 is a wasteful number, since it uses less digits than its factorization.

3478609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14110.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 3478609 is about 1865.1029462204. The cubic root of 3478609 is about 151.5195035651.

The spelling of 3478609 in words is "three million, four hundred seventy-eight thousand, six hundred nine".