4809145 has 12 divisors (see below), whose sum is σ = 6344100. Its totient is φ = 3497120.

The previous prime is 4809143. The next prime is 4809187. The reversal of 4809145 is 5419084.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2013561 + 2795584 = 1419^2 + 1672^2 .

It is not a de Polignac number, because 4809145 - 2¹ = 4809143 is a prime.

It is a super-3 number, since 3×4809145³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4809143) 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 11 ways as a sum of consecutive naturals, for example, 3370 + ... + 4579.

It is an arithmetic number, because the mean of its divisors is an integer number (528675).

Almost surely, 2^4809145 is an apocalyptic number.

It is an amenable number.

4809145 is a deficient number, since it is larger than the sum of its proper divisors (1534955).

4809145 is a wasteful number, since it uses less digits than its factorization.

4809145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976 (or 7965 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4809145 is about 2192.9762880615. The cubic root of 4809145 is about 168.7935927616.

The spelling of 4809145 in words is "four million, eight hundred nine thousand, one hundred forty-five".