79803973 has 2 divisors, whose sum is σ = 79803974. Its totient is φ = 79803972.

The previous prime is 79803947. The next prime is 79803989. The reversal of 79803973 is 37930897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79441569 + 362404 = 8913^2 + 602^2 .

It is a cyclic number.

It is not a de Polignac number, because 79803973 - 2⁹ = 79803461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79803923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39901986 + 39901987.

It is an arithmetic number, because the mean of its divisors is an integer number (39901987).

Almost surely, 2^79803973 is an apocalyptic number.

It is an amenable number.

79803973 is a deficient number, since it is larger than the sum of its proper divisors (1).

79803973 is an equidigital number, since it uses as much as digits as its factorization.

79803973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 79803973 is about 8933.3069464784. The cubic root of 79803973 is about 430.5347106834.

The spelling of 79803973 in words is "seventy-nine million, eight hundred three thousand, nine hundred seventy-three".