78880943 has 2 divisors, whose sum is σ = 78880944. Its totient is φ = 78880942.

The previous prime is 78880937. The next prime is 78880979. The reversal of 78880943 is 34908887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78880943 - 2¹⁴ = 78864559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78880903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39440471 + 39440472.

It is an arithmetic number, because the mean of its divisors is an integer number (39440472).

Almost surely, 2^78880943 is an apocalyptic number.

78880943 is a deficient number, since it is larger than the sum of its proper divisors (1).

78880943 is an equidigital number, since it uses as much as digits as its factorization.

78880943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 78880943 is about 8881.4944125412. The cubic root of 78880943 is about 428.8683838707.

The spelling of 78880943 in words is "seventy-eight million, eight hundred eighty thousand, nine hundred forty-three".