79773447 has 16 divisors (see below), whose sum is σ = 118243328. Its totient is φ = 47507040.

The previous prime is 79773439. The next prime is 79773493. The reversal of 79773447 is 74437797.

It is not a de Polignac number, because 79773447 - 2³ = 79773439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79773396 and 79773405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79773497) 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 in 15 ways as a sum of consecutive naturals, for example, 31783 + ... + 34200.

It is an arithmetic number, because the mean of its divisors is an integer number (7390208).

Almost surely, 2^79773447 is an apocalyptic number.

79773447 is a deficient number, since it is larger than the sum of its proper divisors (38469881).

79773447 is a wasteful number, since it uses less digits than its factorization.

79773447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66030.

The product of its digits is 1037232, while the sum is 48.

The square root of 79773447 is about 8931.5982332391. The cubic root of 79773447 is about 430.4798087441.

The spelling of 79773447 in words is "seventy-nine million, seven hundred seventy-three thousand, four hundred forty-seven".