8381849 has 4 divisors (see below), whose sum is σ = 9579264. Its totient is φ = 7184436.

The previous prime is 8381843. The next prime is 8381881. The reversal of 8381849 is 9481838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-8381849 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8381843) 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, 598697 + ... + 598710.

It is an arithmetic number, because the mean of its divisors is an integer number (2394816).

Almost surely, 2^8381849 is an apocalyptic number.

It is an amenable number.

8381849 is a deficient number, since it is larger than the sum of its proper divisors (1197415).

8381849 is a wasteful number, since it uses less digits than its factorization.

8381849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197414.

The product of its digits is 55296, while the sum is 41.

The square root of 8381849 is about 2895.1423108372. The cubic root of 8381849 is about 203.1327482330.

The spelling of 8381849 in words is "eight million, three hundred eighty-one thousand, eight hundred forty-nine".