3997078 has 16 divisors (see below), whose sum is σ = 6460416. Its totient is φ = 1849320.

The previous prime is 3997069. The next prime is 3997111. The reversal of 3997078 is 8707993.

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, 25 + ... + 2827.

It is an arithmetic number, because the mean of its divisors is an integer number (403776).

Almost surely, 2^3997078 is an apocalyptic number.

3997078 is a deficient number, since it is larger than the sum of its proper divisors (2463338).

3997078 is a wasteful number, since it uses less digits than its factorization.

3997078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 3997078 is about 1999.2693665437. The cubic root of 3997078 is about 158.7014425653.

Subtracting 3997078 from its reverse (8707993), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 3997078 in words is "three million, nine hundred ninety-seven thousand, seventy-eight".