4209161 has 16 divisors (see below), whose sum is σ = 4866048. Its totient is φ = 3603600.

The previous prime is 4209151. The next prime is 4209167. The reversal of 4209161 is 1619024.

It is a happy number.

It is not a de Polignac number, because 4209161 - 2⁶ = 4209097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (4209167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32066 + ... + 32196.

It is an arithmetic number, because the mean of its divisors is an integer number (304128).

Almost surely, 2^4209161 is an apocalyptic number.

It is an amenable number.

4209161 is a deficient number, since it is larger than the sum of its proper divisors (656887).

4209161 is a wasteful number, since it uses less digits than its factorization.

4209161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 4209161 is about 2051.6239908911. The cubic root of 4209161 is about 161.4600859229.

The spelling of 4209161 in words is "four million, two hundred nine thousand, one hundred sixty-one".