4209172 has 24 divisors (see below), whose sum is σ = 8088192. Its totient is φ = 1900800.

The previous prime is 4209169. The next prime is 4209181. The reversal of 4209172 is 2719024.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11748 + ... + 12100.

It is an arithmetic number, because the mean of its divisors is an integer number (337008).

Almost surely, 2^4209172 is an apocalyptic number.

It is an amenable number.

4209172 is a deficient number, since it is larger than the sum of its proper divisors (3879020).

4209172 is a wasteful number, since it uses less digits than its factorization.

4209172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 4209172 is about 2051.6266716925. The cubic root of 4209172 is about 161.4602265732.

The spelling of 4209172 in words is "four million, two hundred nine thousand, one hundred seventy-two".