3994238 has 4 divisors (see below), whose sum is σ = 5991360. Its totient is φ = 1997118.

The previous prime is 3994229. The next prime is 3994253. The reversal of 3994238 is 8324993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8324993 = 73 ⋅114041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998558 + ... + 998561.

It is an arithmetic number, because the mean of its divisors is an integer number (1497840).

Almost surely, 2^3994238 is an apocalyptic number.

3994238 is a deficient number, since it is larger than the sum of its proper divisors (1997122).

3994238 is a wasteful number, since it uses less digits than its factorization.

3994238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997121.

The product of its digits is 46656, while the sum is 38.

The square root of 3994238 is about 1998.5589808660. The cubic root of 3994238 is about 158.6638468612.

The spelling of 3994238 in words is "three million, nine hundred ninety-four thousand, two hundred thirty-eight".