3946999 has 12 divisors (see below), whose sum is σ = 4639800. Its totient is φ = 3347568.

The previous prime is 3946997. The next prime is 3947017. The reversal of 3946999 is 9996493.

It is not a de Polignac number, because 3946999 - 2¹ = 3946997 is a prime.

It is a super-2 number, since 2×3946999² = 31157602212002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4972 + ... + 5710.

It is an arithmetic number, because the mean of its divisors is an integer number (386650).

Almost surely, 2^3946999 is an apocalyptic number.

3946999 is a deficient number, since it is larger than the sum of its proper divisors (692801).

3946999 is a wasteful number, since it uses less digits than its factorization.

3946999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 855 counting only the distinct ones).

The product of its digits is 472392, while the sum is 49.

The square root of 3946999 is about 1986.7055644962. The cubic root of 3946999 is about 158.0358701874.

The spelling of 3946999 in words is "three million, nine hundred forty-six thousand, nine hundred ninety-nine".