80779031 has 2 divisors, whose sum is σ = 80779032. Its totient is φ = 80779030.

The previous prime is 80779021. The next prime is 80779037. The reversal of 80779031 is 13097708.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80779031 is a prime.

It is a super-2 number, since 2×80779031² = 13050503698597922, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 80778982 and 80779000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80779037) 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, 40389515 + 40389516.

It is an arithmetic number, because the mean of its divisors is an integer number (40389516).

Almost surely, 2^80779031 is an apocalyptic number.

80779031 is a deficient number, since it is larger than the sum of its proper divisors (1).

80779031 is an equidigital number, since it uses as much as digits as its factorization.

80779031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 80779031 is about 8987.7155606973. The cubic root of 80779031 is about 432.2810653092.

The spelling of 80779031 in words is "eighty million, seven hundred seventy-nine thousand, thirty-one".