3978930 has 16 divisors (see below), whose sum is σ = 9549504. Its totient is φ = 1061040.

The previous prime is 3978917. The next prime is 3978967. The reversal of 3978930 is 398793.

It is a happy number.

It is an unprimeable number.

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, 66286 + ... + 66345.

It is an arithmetic number, because the mean of its divisors is an integer number (596844).

Almost surely, 2^3978930 is an apocalyptic number.

3978930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3978930 is an abundant number, since it is smaller than the sum of its proper divisors (5570574).

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

3978930 is a wasteful number, since it uses less digits than its factorization.

3978930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132641.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 3978930 is about 1994.7255450312. The cubic root of 3978930 is about 158.4608932037.

The spelling of 3978930 in words is "three million, nine hundred seventy-eight thousand, nine hundred thirty".