3913778 has 16 divisors (see below), whose sum is σ = 6562080. Its totient is φ = 1735200.

The previous prime is 3913771. The next prime is 3913787. The reversal of 3913778 is 8773193.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3913771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268 + ... + 3071.

It is an arithmetic number, because the mean of its divisors is an integer number (410130).

Almost surely, 2^3913778 is an apocalyptic number.

3913778 is a deficient number, since it is larger than the sum of its proper divisors (2648302).

3913778 is a wasteful number, since it uses less digits than its factorization.

3913778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393.

The product of its digits is 31752, while the sum is 38.

The square root of 3913778 is about 1978.3270710375. The cubic root of 3913778 is about 157.5912362962.

The spelling of 3913778 in words is "three million, nine hundred thirteen thousand, seven hundred seventy-eight".