78949711 has 2 divisors, whose sum is σ = 78949712. Its totient is φ = 78949710.

The previous prime is 78949699. The next prime is 78949721. The reversal of 78949711 is 11794987.

It is a strong prime.

It is an emirp because it is prime and its reverse (11794987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78949711 - 2²³ = 70561103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78949721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39474855 + 39474856.

It is an arithmetic number, because the mean of its divisors is an integer number (39474856).

Almost surely, 2^78949711 is an apocalyptic number.

78949711 is a deficient number, since it is larger than the sum of its proper divisors (1).

78949711 is an equidigital number, since it uses as much as digits as its factorization.

78949711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The square root of 78949711 is about 8885.3649896895. The cubic root of 78949711 is about 428.9929760878.

The spelling of 78949711 in words is "seventy-eight million, nine hundred forty-nine thousand, seven hundred eleven".