3994395 has 8 divisors (see below), whose sum is σ = 6391056. Its totient is φ = 2130336.

The previous prime is 3994391. The next prime is 3994411. The reversal of 3994395 is 5934993.

It is a happy number.

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

It is not a de Polignac number, because 3994395 - 2² = 3994391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3994391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133132 + ... + 133161.

It is an arithmetic number, because the mean of its divisors is an integer number (798882).

Almost surely, 2^3994395 is an apocalyptic number.

3994395 is a deficient number, since it is larger than the sum of its proper divisors (2396661).

3994395 is a wasteful number, since it uses less digits than its factorization.

3994395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266301.

The product of its digits is 131220, while the sum is 42.

The square root of 3994395 is about 1998.5982587804. The cubic root of 3994395 is about 158.6659256805.

The spelling of 3994395 in words is "three million, nine hundred ninety-four thousand, three hundred ninety-five".