8157349 has 4 divisors (see below), whose sum is σ = 8163436. Its totient is φ = 8151264.

The previous prime is 8157343. The next prime is 8157379. The reversal of 8157349 is 9437518.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4708900 + 3448449 = 2170^2 + 1857^2 .

It is a cyclic number.

It is not a de Polignac number, because 8157349 - 2⁷ = 8157221 is a prime.

It is a super-3 number, since 3×8157349³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54 + ... + 4039.

It is an arithmetic number, because the mean of its divisors is an integer number (2040859).

Almost surely, 2^8157349 is an apocalyptic number.

It is an amenable number.

8157349 is a deficient number, since it is larger than the sum of its proper divisors (6087).

8157349 is a wasteful number, since it uses less digits than its factorization.

8157349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086.

The product of its digits is 30240, while the sum is 37.

The square root of 8157349 is about 2856.1073159109. The cubic root of 8157349 is about 201.3027376159.

The spelling of 8157349 in words is "eight million, one hundred fifty-seven thousand, three hundred forty-nine".