4172405 has 8 divisors (see below), whose sum is σ = 5021784. Its totient is φ = 3328000.

The previous prime is 4172369. The next prime is 4172417. The reversal of 4172405 is 5042714.

It can be written as a sum of positive squares in 4 ways, for example, as 1343281 + 2829124 = 1159^2 + 1682^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4172405 - 2⁶ = 4172341 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 965 + ... + 3045.

It is an arithmetic number, because the mean of its divisors is an integer number (627723).

Almost surely, 2^4172405 is an apocalyptic number.

It is an amenable number.

4172405 is a deficient number, since it is larger than the sum of its proper divisors (849379).

4172405 is a wasteful number, since it uses less digits than its factorization.

4172405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 4172405 is about 2042.6465675687. The cubic root of 4172405 is about 160.9887342142.

The spelling of 4172405 in words is "four million, one hundred seventy-two thousand, four hundred five".