80429491 has 2 divisors, whose sum is σ = 80429492. Its totient is φ = 80429490.

The previous prime is 80429477. The next prime is 80429501. The reversal of 80429491 is 19492408.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80429491 - 2²¹ = 78332339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80429491.

It is not a weakly prime, because it can be changed into another prime (80429471) 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 as a sum of consecutive naturals, namely, 40214745 + 40214746.

It is an arithmetic number, because the mean of its divisors is an integer number (40214746).

Almost surely, 2^80429491 is an apocalyptic number.

80429491 is a deficient number, since it is larger than the sum of its proper divisors (1).

80429491 is an equidigital number, since it uses as much as digits as its factorization.

80429491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 80429491 is about 8968.2490487274. The cubic root of 80429491 is about 431.6566541276.

The spelling of 80429491 in words is "eighty million, four hundred twenty-nine thousand, four hundred ninety-one".