971229505 has 8 divisors (see below), whose sum is σ = 1187465832. Its totient is φ = 762323328.

The previous prime is 971229491. The next prime is 971229509. The reversal of 971229505 is 505922179.

971229505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 454712976 + 516516529 = 21324^2 + 22727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 971229505 - 2¹¹ = 971227457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971229509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1832244 + ... + 1832773.

It is an arithmetic number, because the mean of its divisors is an integer number (148433229).

Almost surely, 2^971229505 is an apocalyptic number.

It is an amenable number.

971229505 is a deficient number, since it is larger than the sum of its proper divisors (216236327).

971229505 is a wasteful number, since it uses less digits than its factorization.

971229505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665075.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 971229505 is about 31164.5552671621. Note that the first 3 decimals coincide. The cubic root of 971229505 is about 990.3163648984.

The spelling of 971229505 in words is "nine hundred seventy-one million, two hundred twenty-nine thousand, five hundred five".