127727947 has 4 divisors (see below), whose sum is σ = 133281360. Its totient is φ = 122174536.

The previous prime is 127727923. The next prime is 127727969. The reversal of 127727947 is 749727721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749727721 = 4831 ⋅155191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127727947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127727897 and 127727906.

It is not an unprimeable number, because it can be changed into a prime (127727917) 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 3 ways as a sum of consecutive naturals, for example, 2776672 + ... + 2776717.

It is an arithmetic number, because the mean of its divisors is an integer number (33320340).

Almost surely, 2^127727947 is an apocalyptic number.

127727947 is a deficient number, since it is larger than the sum of its proper divisors (5553413).

127727947 is an equidigital number, since it uses as much as digits as its factorization.

127727947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553412.

The product of its digits is 345744, while the sum is 46.

The square root of 127727947 is about 11301.6789460681. The cubic root of 127727947 is about 503.6111195122.

The spelling of 127727947 in words is "one hundred twenty-seven million, seven hundred twenty-seven thousand, nine hundred forty-seven".