3943654 has 16 divisors (see below), whose sum is σ = 6950160. Its totient is φ = 1654560.

The previous prime is 3943651. The next prime is 3943661. The reversal of 3943654 is 4563493.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6609 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (434385).

Almost surely, 2^3943654 is an apocalyptic number.

3943654 is a deficient number, since it is larger than the sum of its proper divisors (3006506).

3943654 is a wasteful number, since it uses less digits than its factorization.

3943654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13815.

The product of its digits is 38880, while the sum is 34.

The square root of 3943654 is about 1985.8635401256. The cubic root of 3943654 is about 157.9912135262.

The spelling of 3943654 in words is "three million, nine hundred forty-three thousand, six hundred fifty-four".