4789945 has 8 divisors (see below), whose sum is σ = 5764680. Its totient is φ = 3820800.

The previous prime is 4789877. The next prime is 4789949. The reversal of 4789945 is 5499874.

It can be written as a sum of positive squares in 4 ways, for example, as 1183744 + 3606201 = 1088^2 + 1899^2 .

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

It is not a de Polignac number, because 4789945 - 2¹⁵ = 4757177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4789895 and 4789904.

It is not an unprimeable number, because it can be changed into a prime (4789949) 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 7 ways as a sum of consecutive naturals, for example, 811 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (720585).

Almost surely, 2^4789945 is an apocalyptic number.

It is an amenable number.

4789945 is a deficient number, since it is larger than the sum of its proper divisors (974735).

4789945 is a wasteful number, since it uses less digits than its factorization.

4789945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795.

The product of its digits is 362880, while the sum is 46.

The square root of 4789945 is about 2188.5942977171. The cubic root of 4789945 is about 168.5686630030.

The spelling of 4789945 in words is "four million, seven hundred eighty-nine thousand, nine hundred forty-five".