127729479 has 8 divisors (see below), whose sum is σ = 174266752. Its totient is φ = 83172600.

The previous prime is 127729477. The next prime is 127729501. The reversal of 127729479 is 974927721.

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

It is not a de Polignac number, because 127729479 - 2¹ = 127729477 is a prime.

It is a super-2 number, since 2×127729479² = 32629639611222882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127729477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494947 + ... + 495204.

It is an arithmetic number, because the mean of its divisors is an integer number (21783344).

Almost surely, 2^127729479 is an apocalyptic number.

127729479 is a deficient number, since it is larger than the sum of its proper divisors (46537273).

127729479 is an equidigital number, since it uses as much as digits as its factorization.

127729479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990197.

The product of its digits is 444528, while the sum is 48.

The square root of 127729479 is about 11301.7467234052. The cubic root of 127729479 is about 503.6131329821.

The spelling of 127729479 in words is "one hundred twenty-seven million, seven hundred twenty-nine thousand, four hundred seventy-nine".