3853440 has 128 divisors (see below), whose sum is σ = 13708800. Its totient is φ = 1022976.

The previous prime is 3853429. The next prime is 3853469. The reversal of 3853440 is 443583.

It is a happy number.

3853440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17169 + ... + 17391.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

Almost surely, 2^3853440 is an apocalyptic number.

3853440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3853440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6854400).

3853440 is an abundant number, since it is smaller than the sum of its proper divisors (9855360).

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

3853440 is a wasteful number, since it uses less digits than its factorization.

3853440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 3853440 is about 1963.0180844811. The cubic root of 3853440 is about 156.7771867407. Note that the first 3 decimals are identical.

The spelling of 3853440 in words is "three million, eight hundred fifty-three thousand, four hundred forty".