3831978 has 8 divisors (see below), whose sum is σ = 7663968. Its totient is φ = 1277324.

The previous prime is 3831937. The next prime is 3832001. The reversal of 3831978 is 8791383.

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

3831978 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, 319326 + ... + 319337.

It is an arithmetic number, because the mean of its divisors is an integer number (957996).

Almost surely, 2^3831978 is an apocalyptic number.

3831978 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.

3831978 is a wasteful number, since it uses less digits than its factorization.

3831978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638668.

The product of its digits is 36288, while the sum is 39.

The square root of 3831978 is about 1957.5438692402. The cubic root of 3831978 is about 156.4855842485.

The spelling of 3831978 in words is "three million, eight hundred thirty-one thousand, nine hundred seventy-eight".