3981662 has 4 divisors (see below), whose sum is σ = 5972496. Its totient is φ = 1990830.

The previous prime is 3981647. The next prime is 3981683. The reversal of 3981662 is 2661893.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995414 + ... + 995417.

It is an arithmetic number, because the mean of its divisors is an integer number (1493124).

Almost surely, 2^3981662 is an apocalyptic number.

3981662 is a deficient number, since it is larger than the sum of its proper divisors (1990834).

3981662 is a wasteful number, since it uses less digits than its factorization.

3981662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990833.

The product of its digits is 15552, while the sum is 35.

The square root of 3981662 is about 1995.4102335109. The cubic root of 3981662 is about 158.4971522076.

The spelling of 3981662 in words is "three million, nine hundred eighty-one thousand, six hundred sixty-two".