4132809 has 8 divisors (see below), whose sum is σ = 6122720. Its totient is φ = 2755188.

The previous prime is 4132783. The next prime is 4132829. The reversal of 4132809 is 9082314.

It is not a de Polignac number, because 4132809 - 2⁸ = 4132553 is a prime.

It is a super-2 number, since 2×4132809² = 34160220460962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 153067 = 4132809 / (4 + 1 + 3 + 2 + 8 + 0 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4132829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76507 + ... + 76560.

It is an arithmetic number, because the mean of its divisors is an integer number (765340).

Almost surely, 2^4132809 is an apocalyptic number.

It is an amenable number.

4132809 is a deficient number, since it is larger than the sum of its proper divisors (1989911).

4132809 is a wasteful number, since it uses less digits than its factorization.

4132809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153076 (or 153070 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4132809 is about 2032.9311350855. The cubic root of 4132809 is about 160.4778552730.

The spelling of 4132809 in words is "four million, one hundred thirty-two thousand, eight hundred nine".