80867879 has 2 divisors, whose sum is σ = 80867880. Its totient is φ = 80867878.

The previous prime is 80867873. The next prime is 80867881. The reversal of 80867879 is 97876808.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80867879 is a prime.

It is a super-2 number, since 2×80867879² = 13079227707917282, which contains 22 as substring.

Together with 80867881, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80867879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80867873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40433939 + 40433940.

It is an arithmetic number, because the mean of its divisors is an integer number (40433940).

Almost surely, 2^80867879 is an apocalyptic number.

80867879 is a deficient number, since it is larger than the sum of its proper divisors (1).

80867879 is an equidigital number, since it uses as much as digits as its factorization.

80867879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 80867879 is about 8992.6569488667. The cubic root of 80867879 is about 432.4394943592.

The spelling of 80867879 in words is "eighty million, eight hundred sixty-seven thousand, eight hundred seventy-nine".