4146809 has 4 divisors (see below), whose sum is σ = 4158720. Its totient is φ = 4134900.

The previous prime is 4146803. The next prime is 4146811. The reversal of 4146809 is 9086414.

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: 9086414 = 2 ⋅4543207.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4146809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4146803) 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, 5417 + ... + 6134.

It is an arithmetic number, because the mean of its divisors is an integer number (1039680).

Almost surely, 2^4146809 is an apocalyptic number.

It is an amenable number.

4146809 is a deficient number, since it is larger than the sum of its proper divisors (11911).

4146809 is a wasteful number, since it uses less digits than its factorization.

4146809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11910.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4146809 is about 2036.3715279880. The cubic root of 4146809 is about 160.6588587043.

The spelling of 4146809 in words is "four million, one hundred forty-six thousand, eight hundred nine".