3998966 has 8 divisors (see below), whose sum is σ = 6009384. Its totient is φ = 1995840.

The previous prime is 3998959. The next prime is 3998971. The reversal of 3998966 is 6698993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 2831.

It is an arithmetic number, because the mean of its divisors is an integer number (751173).

Almost surely, 2^3998966 is an apocalyptic number.

3998966 is a deficient number, since it is larger than the sum of its proper divisors (2010418).

3998966 is a wasteful number, since it uses less digits than its factorization.

3998966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646.

The product of its digits is 629856, while the sum is 50.

The square root of 3998966 is about 1999.7414832923. The cubic root of 3998966 is about 158.7264259123.

The spelling of 3998966 in words is "three million, nine hundred ninety-eight thousand, nine hundred sixty-six".