4172491217 has 4 divisors (see below), whose sum is σ = 4173335220. Its totient is φ = 4171647216.

The previous prime is 4172491207. The next prime is 4172491243. The reversal of 4172491217 is 7121942714.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7121942714 = 2 ⋅3560971357.

It can be written as a sum of positive squares in 2 ways, for example, as 2164017361 + 2008473856 = 46519^2 + 44816^2 .

It is a cyclic number.

It is not a de Polignac number, because 4172491217 - 2⁴ = 4172491201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4172491207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414542 + ... + 424487.

It is an arithmetic number, because the mean of its divisors is an integer number (1043333805).

Almost surely, 2^4172491217 is an apocalyptic number.

It is an amenable number.

4172491217 is a deficient number, since it is larger than the sum of its proper divisors (844003).

4172491217 is an equidigital number, since it uses as much as digits as its factorization.

4172491217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844002.

The product of its digits is 28224, while the sum is 38.

The square root of 4172491217 is about 64594.8234535864. The cubic root of 4172491217 is about 1609.8984307670.

The spelling of 4172491217 in words is "four billion, one hundred seventy-two million, four hundred ninety-one thousand, two hundred seventeen".