4009172 has 24 divisors (see below), whose sum is σ = 7303296. Its totient is φ = 1924128.

The previous prime is 4009151. The next prime is 4009193. The reversal of 4009172 is 2719004.

It is an interprime number because it is at equal distance from previous prime (4009151) and next prime (4009193).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15113 + ... + 15375.

It is an arithmetic number, because the mean of its divisors is an integer number (304304).

Almost surely, 2^4009172 is an apocalyptic number.

It is an amenable number.

4009172 is a deficient number, since it is larger than the sum of its proper divisors (3294124).

4009172 is a wasteful number, since it uses less digits than its factorization.

4009172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 4009172 is about 2002.2916870426. The cubic root of 4009172 is about 158.8613429317.

The spelling of 4009172 in words is "four million, nine thousand, one hundred seventy-two".