3969808 has 20 divisors (see below), whose sum is σ = 7856640. Its totient is φ = 1942304.

The previous prime is 3969793. The next prime is 3969809. The reversal of 3969808 is 8089693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888 + ... + 3391.

It is an arithmetic number, because the mean of its divisors is an integer number (392832).

Almost surely, 2^3969808 is an apocalyptic number.

It is an amenable number.

3969808 is a deficient number, since it is larger than the sum of its proper divisors (3886832).

3969808 is a wasteful number, since it uses less digits than its factorization.

3969808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3969808 is about 1992.4377029157. The cubic root of 3969808 is about 158.3397059916.

Subtracting 3969808 from its reverse (8089693), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 3969808 in words is "three million, nine hundred sixty-nine thousand, eight hundred eight".