4172091 has 16 divisors (see below), whose sum is σ = 6935808. Its totient is φ = 2167200.

The previous prime is 4172087. The next prime is 4172099. The reversal of 4172091 is 1902714.

It is not a de Polignac number, because 4172091 - 2² = 4172087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4172099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8800 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (433488).

Almost surely, 2^4172091 is an apocalyptic number.

4172091 is a deficient number, since it is larger than the sum of its proper divisors (2763717).

4172091 is a wasteful number, since it uses less digits than its factorization.

4172091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18082.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 4172091 is about 2042.5697050529. The cubic root of 4172091 is about 160.9846956377.

The spelling of 4172091 in words is "four million, one hundred seventy-two thousand, ninety-one".