8149281 has 16 divisors (see below), whose sum is σ = 12471168. Its totient is φ = 4636800.

The previous prime is 8149279. The next prime is 8149301. The reversal of 8149281 is 1829418.

It is not a de Polignac number, because 8149281 - 2¹ = 8149279 is a prime.

It is a super-2 number, since 2×8149281² = 132821561633922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8149181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5211 + ... + 6591.

It is an arithmetic number, because the mean of its divisors is an integer number (779448).

Almost surely, 2^8149281 is an apocalyptic number.

It is an amenable number.

8149281 is a deficient number, since it is larger than the sum of its proper divisors (4321887).

8149281 is a wasteful number, since it uses less digits than its factorization.

8149281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672.

The product of its digits is 4608, while the sum is 33.

The square root of 8149281 is about 2854.6945545890. The cubic root of 8149281 is about 201.2363497808.

The spelling of 8149281 in words is "eight million, one hundred forty-nine thousand, two hundred eighty-one".