3978046 has 16 divisors (see below), whose sum is σ = 6240240. Its totient is φ = 1899520.

The previous prime is 3978043. The next prime is 3978053. The reversal of 3978046 is 6408793.

It is a super-3 number, since 3×3978046³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3977996 and 3978014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978043) 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, 5886 + ... + 6526.

It is an arithmetic number, because the mean of its divisors is an integer number (390015).

Almost surely, 2^3978046 is an apocalyptic number.

3978046 is a deficient number, since it is larger than the sum of its proper divisors (2262194).

3978046 is a wasteful number, since it uses less digits than its factorization.

3978046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 3978046 is about 1994.5039483541. The cubic root of 3978046 is about 158.4491572341.

The spelling of 3978046 in words is "three million, nine hundred seventy-eight thousand, forty-six".