3944842 has 12 divisors (see below), whose sum is σ = 6504498. Its totient is φ = 1793000.

The previous prime is 3944839. The next prime is 3944861. The reversal of 3944842 is 2484493.

It can be written as a sum of positive squares in only one way, i.e., 2758921 + 1185921 = 1661^2 + 1089^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3944798 and 3944807.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7909 + ... + 8392.

Almost surely, 2^3944842 is an apocalyptic number.

3944842 is a deficient number, since it is larger than the sum of its proper divisors (2559656).

3944842 is a wasteful number, since it uses less digits than its factorization.

3944842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16325 (or 16314 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 3944842 is about 1986.1626318104. The cubic root of 3944842 is about 158.0070765404.

The spelling of 3944842 in words is "three million, nine hundred forty-four thousand, eight hundred forty-two".