999929477 has 8 divisors (see below), whose sum is σ = 1087364376. Its totient is φ = 915674112.

The previous prime is 999929471. The next prime is 999929479. The reversal of 999929477 is 774929999.

It can be written as a sum of positive squares in 4 ways, for example, as 545642881 + 454286596 = 23359^2 + 21314^2 .

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 999929477 - 2²⁸ = 731494021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999929471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794228 + ... + 795485.

It is an arithmetic number, because the mean of its divisors is an integer number (135920547).

Almost surely, 2^999929477 is an apocalyptic number.

It is an amenable number.

999929477 is a deficient number, since it is larger than the sum of its proper divisors (87434899).

999929477 is a wasteful number, since it uses less digits than its factorization.

999929477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589767.

The product of its digits is 23147208, while the sum is 65.

The square root of 999929477 is about 31621.6615154865. The cubic root of 999929477 is about 999.9764917807.

The spelling of 999929477 in words is "nine hundred ninety-nine million, nine hundred twenty-nine thousand, four hundred seventy-seven".