79707447 has 12 divisors (see below), whose sum is σ = 115778520. Its totient is φ = 52840368.

The previous prime is 79707437. The next prime is 79707461. The reversal of 79707447 is 74470797.

It is not a de Polignac number, because 79707447 - 2²² = 75513143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79707437) 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 11 ways as a sum of consecutive naturals, for example, 23128 + ... + 26349.

It is an arithmetic number, because the mean of its divisors is an integer number (9648210).

Almost surely, 2^79707447 is an apocalyptic number.

79707447 is a deficient number, since it is larger than the sum of its proper divisors (36071073).

79707447 is a wasteful number, since it uses less digits than its factorization.

79707447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49662 (or 49659 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 79707447 is about 8927.9027212442. The cubic root of 79707447 is about 430.3610578420.

The spelling of 79707447 in words is "seventy-nine million, seven hundred seven thousand, four hundred forty-seven".