3982779 has 6 divisors (see below), whose sum is σ = 5752916. Its totient is φ = 2655180.

The previous prime is 3982763. The next prime is 3982801. The reversal of 3982779 is 9772893.

It is not a de Polignac number, because 3982779 - 2⁴ = 3982763 is a prime.

It is a Duffinian number.

3982779 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3982739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221257 + ... + 221274.

Almost surely, 2^3982779 is an apocalyptic number.

3982779 is a deficient number, since it is larger than the sum of its proper divisors (1770137).

3982779 is a wasteful number, since it uses less digits than its factorization.

3982779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442537 (or 442534 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 3982779 is about 1995.6901062039. The cubic root of 3982779 is about 158.5119722138.

It can be divided in two parts, 3982 and 779, that added together give a square (4761 = 69²).

The spelling of 3982779 in words is "three million, nine hundred eighty-two thousand, seven hundred seventy-nine".