78952823 has 2 divisors, whose sum is σ = 78952824. Its totient is φ = 78952822.

The previous prime is 78952807. The next prime is 78952843. The reversal of 78952823 is 32825987.

It is a weak prime.

It is an emirp because it is prime and its reverse (32825987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78952823 - 2⁴ = 78952807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78952843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39476411 + 39476412.

It is an arithmetic number, because the mean of its divisors is an integer number (39476412).

Almost surely, 2^78952823 is an apocalyptic number.

78952823 is a deficient number, since it is larger than the sum of its proper divisors (1).

78952823 is an equidigital number, since it uses as much as digits as its factorization.

78952823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 78952823 is about 8885.5401073880. The cubic root of 78952823 is about 428.9986126235.

The spelling of 78952823 in words is "seventy-eight million, nine hundred fifty-two thousand, eight hundred twenty-three".