3917994 has 8 divisors (see below), whose sum is σ = 7836000. Its totient is φ = 1305996.

The previous prime is 3917989. The next prime is 3918011. The reversal of 3917994 is 4997193.

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

3917994 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326494 + ... + 326505.

It is an arithmetic number, because the mean of its divisors is an integer number (979500).

Almost surely, 2^3917994 is an apocalyptic number.

3917994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3917994 is a wasteful number, since it uses less digits than its factorization.

3917994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653004.

The product of its digits is 61236, while the sum is 42.

The square root of 3917994 is about 1979.3923309945. The cubic root of 3917994 is about 157.6478028009.

It can be divided in two parts, 391 and 7994, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 3917994 in words is "three million, nine hundred seventeen thousand, nine hundred ninety-four".