79940473 has 2 divisors, whose sum is σ = 79940474. Its totient is φ = 79940472.

The previous prime is 79940431. The next prime is 79940503. The reversal of 79940473 is 37404997.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77211369 + 2729104 = 8787^2 + 1652^2 .

It is a cyclic number.

It is not a de Polignac number, because 79940473 - 2⁹ = 79939961 is a prime.

It is not a weakly prime, because it can be changed into another prime (79940173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39970236 + 39970237.

It is an arithmetic number, because the mean of its divisors is an integer number (39970237).

Almost surely, 2^79940473 is an apocalyptic number.

It is an amenable number.

79940473 is a deficient number, since it is larger than the sum of its proper divisors (1).

79940473 is an equidigital number, since it uses as much as digits as its factorization.

79940473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 79940473 is about 8940.9436302887. The cubic root of 79940473 is about 430.7800389597.

The spelling of 79940473 in words is "seventy-nine million, nine hundred forty thousand, four hundred seventy-three".