4055840 has 24 divisors (see below), whose sum is σ = 9582300. Its totient is φ = 1622272.

The previous prime is 4055839. The next prime is 4055851. The reversal of 4055840 is 485504.

4055840 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3984016 + 71824 = 1996^2 + 268^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12515 + ... + 12834.

Almost surely, 2^4055840 is an apocalyptic number.

4055840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4055840 is an abundant number, since it is smaller than the sum of its proper divisors (5526460).

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

4055840 is a wasteful number, since it uses less digits than its factorization.

4055840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25364 (or 25356 counting only the distinct ones).

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

The square root of 4055840 is about 2013.9116167300. The cubic root of 4055840 is about 159.4753649515.

The spelling of 4055840 in words is "four million, fifty-five thousand, eight hundred forty".