3994536 has 128 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 1002240.

The previous prime is 3994513. The next prime is 3994537. The reversal of 3994536 is 6354993.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 3994494 and 3994503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67675 + ... + 67733.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

Almost surely, 2^3994536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6451200).

3994536 is an abundant number, since it is smaller than the sum of its proper divisors (8907864).

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

3994536 is a wasteful number, since it uses less digits than its factorization.

3994536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 115 counting only the distinct ones).

The product of its digits is 87480, while the sum is 39.

The square root of 3994536 is about 1998.6335331921. The cubic root of 3994536 is about 158.6677925992.

The spelling of 3994536 in words is "three million, nine hundred ninety-four thousand, five hundred thirty-six".