80429381 has 2 divisors, whose sum is σ = 80429382. Its totient is φ = 80429380.

The previous prime is 80429353. The next prime is 80429399. The reversal of 80429381 is 18392408.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56761156 + 23668225 = 7534^2 + 4865^2 .

It is a cyclic number.

It is not a de Polignac number, because 80429381 - 2¹⁰ = 80428357 is a prime.

It is a super-2 number, since 2×80429381² = 12937770656086322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80429311) 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, 40214690 + 40214691.

It is an arithmetic number, because the mean of its divisors is an integer number (40214691).

Almost surely, 2^80429381 is an apocalyptic number.

It is an amenable number.

80429381 is a deficient number, since it is larger than the sum of its proper divisors (1).

80429381 is an equidigital number, since it uses as much as digits as its factorization.

80429381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 80429381 is about 8968.2429159786. The cubic root of 80429381 is about 431.6564573413.

The spelling of 80429381 in words is "eighty million, four hundred twenty-nine thousand, three hundred eighty-one".