80257739 has 2 divisors, whose sum is σ = 80257740. Its totient is φ = 80257738.

The previous prime is 80257711. The next prime is 80257757. The reversal of 80257739 is 93775208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80257739 - 2⁸ = 80257483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80257696 and 80257705.

It is not a weakly prime, because it can be changed into another prime (80257789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40128869 + 40128870.

It is an arithmetic number, because the mean of its divisors is an integer number (40128870).

Almost surely, 2^80257739 is an apocalyptic number.

80257739 is a deficient number, since it is larger than the sum of its proper divisors (1).

80257739 is an equidigital number, since it uses as much as digits as its factorization.

80257739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 80257739 is about 8958.6683720294. The cubic root of 80257739 is about 431.3491768260.

The spelling of 80257739 in words is "eighty million, two hundred fifty-seven thousand, seven hundred thirty-nine".