78862079 has 2 divisors, whose sum is σ = 78862080. Its totient is φ = 78862078.

The previous prime is 78862073. The next prime is 78862087. The reversal of 78862079 is 97026887.

It is a weak prime.

It is an emirp because it is prime and its reverse (97026887) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78862079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78862073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39431039 + 39431040.

It is an arithmetic number, because the mean of its divisors is an integer number (39431040).

Almost surely, 2^78862079 is an apocalyptic number.

78862079 is a deficient number, since it is larger than the sum of its proper divisors (1).

78862079 is an equidigital number, since it uses as much as digits as its factorization.

78862079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 78862079 is about 8880.4323656002. The cubic root of 78862079 is about 428.8341938712.

The spelling of 78862079 in words is "seventy-eight million, eight hundred sixty-two thousand, seventy-nine".