4906009 has 4 divisors (see below), whose sum is σ = 5164240. Its totient is φ = 4647780.

The previous prime is 4906007. The next prime is 4906021. The reversal of 4906009 is 9006094.

4906009 = T₁₈₀₇ + T₁₈₀₈ + T₁₈₀₉.

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: 9006094 = 2 ⋅4503047.

It is not a de Polignac number, because 4906009 - 2¹ = 4906007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4906003) 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, 129087 + ... + 129124.

It is an arithmetic number, because the mean of its divisors is an integer number (1291060).

Almost surely, 2^4906009 is an apocalyptic number.

4906009 is the 1809-th centered triangular number.

It is an amenable number.

4906009 is a deficient number, since it is larger than the sum of its proper divisors (258231).

4906009 is a wasteful number, since it uses less digits than its factorization.

4906009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258230.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 4906009 is about 2214.9512409983. The cubic root of 4906009 is about 169.9193273519.

The spelling of 4906009 in words is "four million, nine hundred six thousand, nine".