80779331 has 2 divisors, whose sum is σ = 80779332. Its totient is φ = 80779330.

The previous prime is 80779277. The next prime is 80779333. The reversal of 80779331 is 13397708.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80779331 - 2⁶ = 80779267 is a prime.

It is a super-2 number, since 2×80779331² = 13050600633615122, which contains 22 as substring.

Together with 80779333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80779333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40389665 + 40389666.

It is an arithmetic number, because the mean of its divisors is an integer number (40389666).

Almost surely, 2^80779331 is an apocalyptic number.

80779331 is a deficient number, since it is larger than the sum of its proper divisors (1).

80779331 is an equidigital number, since it uses as much as digits as its factorization.

80779331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 80779331 is about 8987.7322501285. The cubic root of 80779331 is about 432.2816004487.

The spelling of 80779331 in words is "eighty million, seven hundred seventy-nine thousand, three hundred thirty-one".