3847147999001 has 4 divisors (see below), whose sum is σ = 3847293217332. Its totient is φ = 3847002780672.

The previous prime is 3847147998971. The next prime is 3847147999043. The reversal of 3847147999001 is 1009997417483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3444810240400 + 402337758601 = 1856020^2 + 634301^2 .

It is a cyclic number.

It is not a de Polignac number, because 3847147999001 - 2⁶ = 3847147998937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3847147999091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72569420 + ... + 72622413.

It is an arithmetic number, because the mean of its divisors is an integer number (961823304333).

Almost surely, 2^{3847147999001} is an apocalyptic number.

It is an amenable number.

3847147999001 is a deficient number, since it is larger than the sum of its proper divisors (145218331).

3847147999001 is a wasteful number, since it uses less digits than its factorization.

3847147999001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145218330.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 3847147999001 in words is "three trillion, eight hundred forty-seven billion, one hundred forty-seven million, nine hundred ninety-nine thousand, one".