4048409 has 4 divisors (see below), whose sum is σ = 4061904. Its totient is φ = 4034916.

The previous prime is 4048393. The next prime is 4048417. The reversal of 4048409 is 9048404.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 4048409 - 2⁴ = 4048393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (4048459) 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, 6287 + ... + 6900.

It is an arithmetic number, because the mean of its divisors is an integer number (1015476).

Almost surely, 2^4048409 is an apocalyptic number.

It is an amenable number.

4048409 is a deficient number, since it is larger than the sum of its proper divisors (13495).

4048409 is a wasteful number, since it uses less digits than its factorization.

4048409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13494.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 4048409 is about 2012.0658537931. The cubic root of 4048409 is about 159.3779099302.

The spelling of 4048409 in words is "four million, forty-eight thousand, four hundred nine".