78879803 has 2 divisors, whose sum is σ = 78879804. Its totient is φ = 78879802.

The previous prime is 78879781. The next prime is 78879809. The reversal of 78879803 is 30897887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78879803 - 2⁸ = 78879547 is a prime.

It is not a weakly prime, because it can be changed into another prime (78879809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39439901 + 39439902.

It is an arithmetic number, because the mean of its divisors is an integer number (39439902).

Almost surely, 2^78879803 is an apocalyptic number.

78879803 is a deficient number, since it is larger than the sum of its proper divisors (1).

78879803 is an equidigital number, since it uses as much as digits as its factorization.

78879803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 78879803 is about 8881.4302339207. The cubic root of 78879803 is about 428.8663178359.

The spelling of 78879803 in words is "seventy-eight million, eight hundred seventy-nine thousand, eight hundred three".