3849431039991 has 24 divisors (see below), whose sum is σ = 5892316662960. Its totient is φ = 2417360668800.

The previous prime is 3849431039989. The next prime is 3849431040019. The reversal of 3849431039991 is 1999301349483.

3849431039991 is a `hidden beast` number, since 3 + 84 + 9 + 431 + 0 + 39 + 9 + 91 = 666.

It is not a de Polignac number, because 3849431039991 - 2¹ = 3849431039989 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3849431039191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179852445 + ... + 179873846.

It is an arithmetic number, because the mean of its divisors is an integer number (245513194290).

Almost surely, 2^{3849431039991} is an apocalyptic number.

3849431039991 is a deficient number, since it is larger than the sum of its proper divisors (2042885622969).

3849431039991 is a wasteful number, since it uses less digits than its factorization.

3849431039991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359726367 (or 359726364 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The spelling of 3849431039991 in words is "three trillion, eight hundred forty-nine billion, four hundred thirty-one million, thirty-nine thousand, nine hundred ninety-one".