78024949 has 2 divisors, whose sum is σ = 78024950. Its totient is φ = 78024948.

The previous prime is 78024931. The next prime is 78024967. The reversal of 78024949 is 94942087.

It is a balanced prime because it is at equal distance from previous prime (78024931) and next prime (78024967).

It can be written as a sum of positive squares in only one way, i.e., 64112049 + 13912900 = 8007^2 + 3730^2 .

It is an emirp because it is prime and its reverse (94942087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78024949 - 2⁹ = 78024437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78024929) 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, 39012474 + 39012475.

It is an arithmetic number, because the mean of its divisors is an integer number (39012475).

Almost surely, 2^78024949 is an apocalyptic number.

It is an amenable number.

78024949 is a deficient number, since it is larger than the sum of its proper divisors (1).

78024949 is an equidigital number, since it uses as much as digits as its factorization.

78024949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 78024949 is about 8833.1732123852. The cubic root of 78024949 is about 427.3114182544.

The spelling of 78024949 in words is "seventy-eight million, twenty-four thousand, nine hundred forty-nine".