78699043 has 2 divisors, whose sum is σ = 78699044. Its totient is φ = 78699042.

The previous prime is 78699029. The next prime is 78699053. The reversal of 78699043 is 34099687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78699043 - 2²⁵ = 45144611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78698984 and 78699002.

It is not a weakly prime, because it can be changed into another prime (78699053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39349521 + 39349522.

It is an arithmetic number, because the mean of its divisors is an integer number (39349522).

Almost surely, 2^78699043 is an apocalyptic number.

78699043 is a deficient number, since it is larger than the sum of its proper divisors (1).

78699043 is an equidigital number, since it uses as much as digits as its factorization.

78699043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 78699043 is about 8871.2481083554. The cubic root of 78699043 is about 428.5384723282.

The spelling of 78699043 in words is "seventy-eight million, six hundred ninety-nine thousand, forty-three".