3978424012 has 24 divisors (see below), whose sum is σ = 7266635712. Its totient is φ = 1904073600.

The previous prime is 3978423989. The next prime is 3978424033. The reversal of 3978424012 is 2104248793.

It is a super-2 number, since 2×3978424012² = 31655715238516352288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220164 + ... + 237547.

It is an arithmetic number, because the mean of its divisors is an integer number (302776488).

Almost surely, 2^3978424012 is an apocalyptic number.

It is an amenable number.

3978424012 is a deficient number, since it is larger than the sum of its proper divisors (3288211700).

3978424012 is a wasteful number, since it uses less digits than its factorization.

3978424012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457809 (or 457807 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 3978424012 is about 63074.7494010083. The cubic root of 3978424012 is about 1584.5417592797.

The spelling of 3978424012 in words is "three billion, nine hundred seventy-eight million, four hundred twenty-four thousand, twelve".