4917945 has 16 divisors (see below), whose sum is σ = 8003520. Its totient is φ = 2577984.

The previous prime is 4917943. The next prime is 4917967. The reversal of 4917945 is 5497194.

It is not a de Polignac number, because 4917945 - 2¹ = 4917943 is a prime.

It is a d-powerful number, because it can be written as 4⁸ + 9³ + 1 + 7² + 9⁷ + 4⁸ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4917943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1894 + ... + 3663.

It is an arithmetic number, because the mean of its divisors is an integer number (500220).

Almost surely, 2^4917945 is an apocalyptic number.

It is an amenable number.

4917945 is a deficient number, since it is larger than the sum of its proper divisors (3085575).

4917945 is a wasteful number, since it uses less digits than its factorization.

4917945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5624.

The product of its digits is 45360, while the sum is 39.

The square root of 4917945 is about 2217.6440201259. The cubic root of 4917945 is about 170.0570166304.

The spelling of 4917945 in words is "four million, nine hundred seventeen thousand, nine hundred forty-five".