8249139 has 6 divisors (see below), whose sum is σ = 11915436. Its totient is φ = 5499420.

The previous prime is 8249123. The next prime is 8249149. The reversal of 8249139 is 9319428.

It is not a de Polignac number, because 8249139 - 2⁴ = 8249123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8249119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 458277 + ... + 458294.

It is an arithmetic number, because the mean of its divisors is an integer number (1985906).

Almost surely, 2^8249139 is an apocalyptic number.

8249139 is a deficient number, since it is larger than the sum of its proper divisors (3666297).

8249139 is a wasteful number, since it uses less digits than its factorization.

8249139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916577 (or 916574 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 8249139 is about 2872.1314384965. The cubic root of 8249139 is about 202.0549714782.

The spelling of 8249139 in words is "eight million, two hundred forty-nine thousand, one hundred thirty-nine".