3981948 has 24 divisors (see below), whose sum is σ = 9351552. Its totient is φ = 1318704.

The previous prime is 3981937. The next prime is 3981953. The reversal of 3981948 is 8491893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (389648).

Almost surely, 2^3981948 is an apocalyptic number.

It is an amenable number.

3981948 is an abundant number, since it is smaller than the sum of its proper divisors (5369604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3981948 is a wasteful number, since it uses less digits than its factorization.

3981948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161 (or 2159 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 3981948 is about 1995.4818966856. The cubic root of 3981948 is about 158.5009470300.

It can be divided in two parts, 398 and 1948, that added together give a triangular number (2346 = T₆₈).

The spelling of 3981948 in words is "three million, nine hundred eighty-one thousand, nine hundred forty-eight".