80240779 has 2 divisors, whose sum is σ = 80240780. Its totient is φ = 80240778.

The previous prime is 80240761. The next prime is 80240789. The reversal of 80240779 is 97704208.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80240779 - 2¹³ = 80232587 is a prime.

It is a super-2 number, since 2×80240779² = 12877165229053682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80240749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40120389 + 40120390.

It is an arithmetic number, because the mean of its divisors is an integer number (40120390).

Almost surely, 2^80240779 is an apocalyptic number.

80240779 is a deficient number, since it is larger than the sum of its proper divisors (1).

80240779 is an equidigital number, since it uses as much as digits as its factorization.

80240779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 80240779 is about 8957.7217527673. The cubic root of 80240779 is about 431.3187905666.

The spelling of 80240779 in words is "eighty million, two hundred forty thousand, seven hundred seventy-nine".