971728479 has 6 divisors (see below), whose sum is σ = 1403607816. Its totient is φ = 647818980.

The previous prime is 971728427. The next prime is 971728501. The reversal of 971728479 is 974827179.

It is not a de Polignac number, because 971728479 - 2¹⁶ = 971662943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971728409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53984907 + ... + 53984924.

It is an arithmetic number, because the mean of its divisors is an integer number (233934636).

Almost surely, 2^971728479 is an apocalyptic number.

971728479 is a deficient number, since it is larger than the sum of its proper divisors (431879337).

971728479 is a wasteful number, since it uses less digits than its factorization.

971728479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107969837 (or 107969834 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 971728479 is about 31172.5597120288. The cubic root of 971728479 is about 990.4859291867.

The spelling of 971728479 in words is "nine hundred seventy-one million, seven hundred twenty-eight thousand, four hundred seventy-nine".