929317208121 has 27 divisors (see below), whose sum is σ = 1347467089189. Its totient is φ = 617190690552.

The previous prime is 929317208119. The next prime is 929317208143. The reversal of 929317208121 is 121802713929.

The square root of 929317208121 is 964011.

It is a perfect power (a square), and thus also a powerful number.

929317208121 is a `hidden beast` number, since 9 + 2 + 9 + 317 + 208 + 121 = 666.

It is not a de Polignac number, because 929317208121 - 2¹ = 929317208119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (929317208221) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1107648220 + ... + 1107649058.

Almost surely, 2^929317208121 is an apocalyptic number.

929317208121 is the 964011-st square number.

929317208121 is the 482006-th centered octagonal number.

It is an amenable number.

929317208121 is a deficient number, since it is larger than the sum of its proper divisors (418149881068).

929317208121 is an frugal number, since it uses more digits than its factorization.

929317208121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 929317208121 in words is "nine hundred twenty-nine billion, three hundred seventeen million, two hundred eight thousand, one hundred twenty-one".