4140905 has 8 divisors (see below), whose sum is σ = 4984200. Its totient is φ = 3302656.

The previous prime is 4140893. The next prime is 4140923. The reversal of 4140905 is 5090414.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 4129024 = 109^2 + 2032^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4140905 - 2¹⁰ = 4139881 is a prime.

It is a Curzon 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, 881 + ... + 3009.

It is an arithmetic number, because the mean of its divisors is an integer number (623025).

Almost surely, 2^4140905 is an apocalyptic number.

It is an amenable number.

4140905 is a deficient number, since it is larger than the sum of its proper divisors (843295).

4140905 is a wasteful number, since it uses less digits than its factorization.

4140905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4140905 is about 2034.9213744025. The cubic root of 4140905 is about 160.5825767236.

The spelling of 4140905 in words is "four million, one hundred forty thousand, nine hundred five".