8149931 has 4 divisors (see below), whose sum is σ = 8412864. Its totient is φ = 7887000.

The previous prime is 8149927. The next prime is 8149937. The reversal of 8149931 is 1399418.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1399418 = 2 ⋅699709.

It is a cyclic number.

It is not a de Polignac number, because 8149931 - 2² = 8149927 is a prime.

It is a super-2 number, since 2×8149931² = 132842750609522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8149891 and 8149900.

It is not an unprimeable number, because it can be changed into a prime (8149937) 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, 131420 + ... + 131481.

It is an arithmetic number, because the mean of its divisors is an integer number (2103216).

Almost surely, 2^8149931 is an apocalyptic number.

8149931 is a deficient number, since it is larger than the sum of its proper divisors (262933).

8149931 is a wasteful number, since it uses less digits than its factorization.

8149931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262932.

The product of its digits is 7776, while the sum is 35.

The square root of 8149931 is about 2854.8083998756. The cubic root of 8149931 is about 201.2416999522.

The spelling of 8149931 in words is "eight million, one hundred forty-nine thousand, nine hundred thirty-one".