3891873347 has 4 divisors (see below), whose sum is σ = 3894053016. Its totient is φ = 3889693680.

The previous prime is 3891873317. The next prime is 3891873353. The reversal of 3891873347 is 7433781983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7433781983 = 719 ⋅10339057.

It is a cyclic number.

It is not a de Polignac number, because 3891873347 - 2¹⁰ = 3891872323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3891873317) 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, 1087154 + ... + 1090727.

It is an arithmetic number, because the mean of its divisors is an integer number (973513254).

Almost surely, 2^3891873347 is an apocalyptic number.

3891873347 is a deficient number, since it is larger than the sum of its proper divisors (2179669).

3891873347 is a wasteful number, since it uses less digits than its factorization.

3891873347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179668.

The product of its digits is 3048192, while the sum is 53.

The square root of 3891873347 is about 62384.8807564782. The cubic root of 3891873347 is about 1572.9668361011.

The spelling of 3891873347 in words is "three billion, eight hundred ninety-one million, eight hundred seventy-three thousand, three hundred forty-seven".