79720103 has 2 divisors, whose sum is σ = 79720104. Its totient is φ = 79720102.

The previous prime is 79720099. The next prime is 79720117. The reversal of 79720103 is 30102797.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79720103 - 2² = 79720099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79720703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39860051 + 39860052.

It is an arithmetic number, because the mean of its divisors is an integer number (39860052).

Almost surely, 2^79720103 is an apocalyptic number.

79720103 is a deficient number, since it is larger than the sum of its proper divisors (1).

79720103 is an equidigital number, since it uses as much as digits as its factorization.

79720103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 79720103 is about 8928.6114821959. The cubic root of 79720103 is about 430.3838343056.

The spelling of 79720103 in words is "seventy-nine million, seven hundred twenty thousand, one hundred three".