999654029929 has 9 divisors (see below), whose sum is σ = 1007037527223. Its totient is φ = 992324298192.

The previous prime is 999654029917. The next prime is 999654029971. The reversal of 999654029929 is 929920456999.

The square root of 999654029929 is 999827.

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

It can be written as a sum of positive squares in only one way, i.e., 61561053225 + 938092976704 = 248115^2 + 968552^2 .

It is not a de Polignac number, because 999654029929 - 2¹⁵ = 999653997161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999654021929) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 138972357 + ... + 138979549.

Almost surely, 2^999654029929 is an apocalyptic number.

999654029929 is the 999827-th square number.

999654029929 is the 499914-th centered octagonal number.

It is an amenable number.

999654029929 is a deficient number, since it is larger than the sum of its proper divisors (7383497294).

999654029929 is an frugal number, since it uses more digits than its factorization.

999654029929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14664 (or 7332 counting only the distinct ones).

The product of its (nonzero) digits is 255091680, while the sum is 73.

The spelling of 999654029929 in words is "nine hundred ninety-nine billion, six hundred fifty-four million, twenty-nine thousand, nine hundred twenty-nine".