8081929 has 2 divisors, whose sum is σ = 8081930. Its totient is φ = 8081928.

The previous prime is 8081849. The next prime is 8081963. The reversal of 8081929 is 9291808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7991929 + 90000 = 2827^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 8081929 - 2¹⁷ = 7950857 is a prime.

It is a super-2 number, since 2×8081929² = 130635152722082, which contains 22 as substring.

8081929 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8081629) 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 as a sum of consecutive naturals, namely, 4040964 + 4040965.

It is an arithmetic number, because the mean of its divisors is an integer number (4040965).

Almost surely, 2^8081929 is an apocalyptic number.

It is an amenable number.

8081929 is a deficient number, since it is larger than the sum of its proper divisors (1).

8081929 is an equidigital number, since it uses as much as digits as its factorization.

8081929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 8081929 is about 2842.8733703772. The cubic root of 8081929 is about 200.6804241563.

It can be divided in two parts, 808192 and 9, that added together give a square (808201 = 899²).

The spelling of 8081929 in words is "eight million, eighty-one thousand, nine hundred twenty-nine".