80788739 has 2 divisors, whose sum is σ = 80788740. Its totient is φ = 80788738.

The previous prime is 80788733. The next prime is 80788753. The reversal of 80788739 is 93788708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80788739 - 2¹² = 80784643 is a prime.

It is not a weakly prime, because it can be changed into another prime (80788733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40394369 + 40394370.

It is an arithmetic number, because the mean of its divisors is an integer number (40394370).

Almost surely, 2^80788739 is an apocalyptic number.

80788739 is a deficient number, since it is larger than the sum of its proper divisors (1).

80788739 is an equidigital number, since it uses as much as digits as its factorization.

80788739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 80788739 is about 8988.2556149678. The cubic root of 80788739 is about 432.2983817522.

The spelling of 80788739 in words is "eighty million, seven hundred eighty-eight thousand, seven hundred thirty-nine".