3943380 has 96 divisors (see below), whose sum is σ = 12983040. Its totient is φ = 875520.

The previous prime is 3943367. The next prime is 3943397. The reversal of 3943380 is 833493.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17106 + ... + 17334.

It is an arithmetic number, because the mean of its divisors is an integer number (135240).

Almost surely, 2^3943380 is an apocalyptic number.

3943380 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 3943380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6491520).

3943380 is an abundant number, since it is smaller than the sum of its proper divisors (9039660).

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

3943380 is a wasteful number, since it uses less digits than its factorization.

3943380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 3943380 is about 1985.7945513069. The cubic root of 3943380 is about 157.9875544328.

The spelling of 3943380 in words is "three million, nine hundred forty-three thousand, three hundred eighty".