3958440 has 32 divisors (see below), whose sum is σ = 11875680. Its totient is φ = 1055552.

The previous prime is 3958439. The next prime is 3958457. The reversal of 3958440 is 448593.

3958440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 16374 + ... + 16613.

It is an arithmetic number, because the mean of its divisors is an integer number (371115).

Almost surely, 2^3958440 is an apocalyptic number.

3958440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3958440 is an abundant number, since it is smaller than the sum of its proper divisors (7917240).

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

3958440 is a wasteful number, since it uses less digits than its factorization.

3958440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33001 (or 32997 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 3958440 is about 1989.5828708551. The cubic root of 3958440 is about 158.1884201955.

The spelling of 3958440 in words is "three million, nine hundred fifty-eight thousand, four hundred forty".