3994788 has 48 divisors (see below), whose sum is σ = 11217920. Its totient is φ = 1080864.

The previous prime is 3994787. The next prime is 3994789. The reversal of 3994788 is 8874993.

It is an interprime number because it is at equal distance from previous prime (3994787) and next prime (3994789).

It is not an unprimeable number, because it can be changed into a prime (3994787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345 + ... + 2847.

Almost surely, 2^3994788 is an apocalyptic number.

3994788 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5608960).

3994788 is an abundant number, since it is smaller than the sum of its proper divisors (7223132).

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

3994788 is a wasteful number, since it uses less digits than its factorization.

3994788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536 (or 2534 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 3994788 is about 1998.6965752710. The cubic root of 3994788 is about 158.6711291105.

The spelling of 3994788 in words is "three million, nine hundred ninety-four thousand, seven hundred eighty-eight".