3931394 has 8 divisors (see below), whose sum is σ = 5952528. Its totient is φ = 1947220.

The previous prime is 3931393. The next prime is 3931399. The reversal of 3931394 is 4931393.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3931394.

It is not an unprimeable number, because it can be changed into a prime (3931393) 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 3 ways as a sum of consecutive naturals, for example, 8972 + ... + 9399.

It is an arithmetic number, because the mean of its divisors is an integer number (744066).

Almost surely, 2^3931394 is an apocalyptic number.

3931394 is a deficient number, since it is larger than the sum of its proper divisors (2021134).

3931394 is a wasteful number, since it uses less digits than its factorization.

3931394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18480.

The product of its digits is 8748, while the sum is 32.

The square root of 3931394 is about 1982.7743189783. The cubic root of 3931394 is about 157.8273229680.

Subtracting 3931394 from its reverse (4931393), we obtain a palindrome (999999).

The spelling of 3931394 in words is "three million, nine hundred thirty-one thousand, three hundred ninety-four".