78824953 has 2 divisors, whose sum is σ = 78824954. Its totient is φ = 78824952.

The previous prime is 78824951. The next prime is 78824983. The reversal of 78824953 is 35942887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66797929 + 12027024 = 8173^2 + 3468^2 .

It is a cyclic number.

It is not a de Polignac number, because 78824953 - 2¹ = 78824951 is a prime.

Together with 78824951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (78824951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39412476 + 39412477.

It is an arithmetic number, because the mean of its divisors is an integer number (39412477).

Almost surely, 2^78824953 is an apocalyptic number.

It is an amenable number.

78824953 is a deficient number, since it is larger than the sum of its proper divisors (1).

78824953 is an equidigital number, since it uses as much as digits as its factorization.

78824953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 78824953 is about 8878.3417933756. The cubic root of 78824953 is about 428.7668890377.

The spelling of 78824953 in words is "seventy-eight million, eight hundred twenty-four thousand, nine hundred fifty-three".