80140679 has 2 divisors, whose sum is σ = 80140680. Its totient is φ = 80140678.

The previous prime is 80140639. The next prime is 80140699. The reversal of 80140679 is 97604108.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80140679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80140639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40070339 + 40070340.

It is an arithmetic number, because the mean of its divisors is an integer number (40070340).

Almost surely, 2^80140679 is an apocalyptic number.

80140679 is a deficient number, since it is larger than the sum of its proper divisors (1).

80140679 is an equidigital number, since it uses as much as digits as its factorization.

80140679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 80140679 is about 8952.1326509385. The cubic root of 80140679 is about 431.1393598687.

The spelling of 80140679 in words is "eighty million, one hundred forty thousand, six hundred seventy-nine".