3780943 has 4 divisors (see below), whose sum is σ = 3979960. Its totient is φ = 3581928.

The previous prime is 3780941. The next prime is 3780949. The reversal of 3780943 is 3490873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3780943 - 2¹ = 3780941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3780899 and 3780908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3780941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99480 + ... + 99517.

It is an arithmetic number, because the mean of its divisors is an integer number (994990).

Almost surely, 2^3780943 is an apocalyptic number.

3780943 is a deficient number, since it is larger than the sum of its proper divisors (199017).

3780943 is a wasteful number, since it uses less digits than its factorization.

3780943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199016.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 3780943 is about 1944.4647078309. The cubic root of 3780943 is about 155.7877757402.

The spelling of 3780943 in words is "three million, seven hundred eighty thousand, nine hundred forty-three".