4085540 has 24 divisors (see below), whose sum is σ = 8813112. Its totient is φ = 1589760.

The previous prime is 4085539. The next prime is 4085561. The reversal of 4085540 is 455804.

It can be written as a sum of positive squares in 4 ways, for example, as 729316 + 3356224 = 854^2 + 1832^2 .

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, 2021 + ... + 3500.

It is an arithmetic number, because the mean of its divisors is an integer number (367213).

Almost surely, 2^4085540 is an apocalyptic number.

It is an amenable number.

4085540 is an abundant number, since it is smaller than the sum of its proper divisors (4727572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4085540 is a wasteful number, since it uses less digits than its factorization.

4085540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567 (or 5565 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4085540 is about 2021.2718768142. The cubic root of 4085540 is about 159.8636859819.

The spelling of 4085540 in words is "four million, eighty-five thousand, five hundred forty".