78924011 has 2 divisors, whose sum is σ = 78924012. Its totient is φ = 78924010.

The previous prime is 78923989. The next prime is 78924019. The reversal of 78924011 is 11042987.

It is a strong prime.

It is an emirp because it is prime and its reverse (11042987) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78924011 is a prime.

It is not a weakly prime, because it can be changed into another prime (78924019) 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, 39462005 + 39462006.

It is an arithmetic number, because the mean of its divisors is an integer number (39462006).

Almost surely, 2^78924011 is an apocalyptic number.

78924011 is a deficient number, since it is larger than the sum of its proper divisors (1).

78924011 is an equidigital number, since it uses as much as digits as its factorization.

78924011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 78924011 is about 8883.9186736485. The cubic root of 78924011 is about 428.9464219126.

Adding to 78924011 its reverse (11042987), we get a palindrome (89966998).

The spelling of 78924011 in words is "seventy-eight million, nine hundred twenty-four thousand, eleven".