3978854 has 16 divisors (see below), whose sum is σ = 6592320. Its totient is φ = 1785960.

The previous prime is 3978841. The next prime is 3978859. The reversal of 3978854 is 4588793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978859) 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 7 ways as a sum of consecutive naturals, for example, 737 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (412020).

Almost surely, 2^3978854 is an apocalyptic number.

3978854 is a deficient number, since it is larger than the sum of its proper divisors (2613466).

3978854 is a wasteful number, since it uses less digits than its factorization.

3978854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275.

The product of its digits is 241920, while the sum is 44.

The square root of 3978854 is about 1994.7064947004. The cubic root of 3978854 is about 158.4598842972.

The spelling of 3978854 in words is "three million, nine hundred seventy-eight thousand, eight hundred fifty-four".