3845487847 has 4 divisors (see below), whose sum is σ = 3902883256. Its totient is φ = 3788092440.

The previous prime is 3845487817. The next prime is 3845487851. The reversal of 3845487847 is 7487845483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7487845483 = 17 ⋅440461499.

It is a cyclic number.

It is not a de Polignac number, because 3845487847 - 2¹⁵ = 3845455079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3845487791 and 3845487800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845487817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28697604 + ... + 28697737.

It is an arithmetic number, because the mean of its divisors is an integer number (975720814).

Almost surely, 2^3845487847 is an apocalyptic number.

3845487847 is a deficient number, since it is larger than the sum of its proper divisors (57395409).

3845487847 is an equidigital number, since it uses as much as digits as its factorization.

3845487847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57395408.

The product of its digits is 24084480, while the sum is 58.

The square root of 3845487847 is about 62011.9976053022. The cubic root of 3845487847 is about 1566.6926803638.

The spelling of 3845487847 in words is "three billion, eight hundred forty-five million, four hundred eighty-seven thousand, eight hundred forty-seven".