3921994 has 8 divisors (see below), whose sum is σ = 5914368. Its totient is φ = 1950540.

The previous prime is 3921991. The next prime is 3921997. The reversal of 3921994 is 4991293.

It is an interprime number because it is at equal distance from previous prime (3921991) and next prime (3921997).

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

It is not an unprimeable number, because it can be changed into a prime (3921991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4752 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (739296).

Almost surely, 2^3921994 is an apocalyptic number.

3921994 is a deficient number, since it is larger than the sum of its proper divisors (1992374).

3921994 is a wasteful number, since it uses less digits than its factorization.

3921994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10460.

The product of its digits is 17496, while the sum is 37.

The square root of 3921994 is about 1980.4024843450. The cubic root of 3921994 is about 157.7014337097.

The spelling of 3921994 in words is "three million, nine hundred twenty-one thousand, nine hundred ninety-four".