3978812914 has 16 divisors (see below), whose sum is σ = 6295816800. Its totient is φ = 1880656704.

The previous prime is 3978812899. The next prime is 3978812947. The reversal of 3978812914 is 4192188793.

It is a super-2 number, since 2×3978812914² = 31661904409226342792, which contains 22 as substring.

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, 94359 + ... + 129850.

It is an arithmetic number, because the mean of its divisors is an integer number (393488550).

Almost surely, 2^3978812914 is an apocalyptic number.

3978812914 is a deficient number, since it is larger than the sum of its proper divisors (2317003886).

3978812914 is a wasteful number, since it uses less digits than its factorization.

3978812914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224697.

The product of its digits is 870912, while the sum is 52.

The square root of 3978812914 is about 63077.8321916662. The cubic root of 3978812914 is about 1584.5933887172.

The spelling of 3978812914 in words is "three billion, nine hundred seventy-eight million, eight hundred twelve thousand, nine hundred fourteen".