127937947 has 2 divisors, whose sum is σ = 127937948. Its totient is φ = 127937946.

The previous prime is 127937863. The next prime is 127937969. The reversal of 127937947 is 749739721.

It is a strong prime.

It is an emirp because it is prime and its reverse (749739721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127937947 - 2¹⁵ = 127905179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127937947.

It is not a weakly prime, because it can be changed into another prime (127937977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63968973 + 63968974.

It is an arithmetic number, because the mean of its divisors is an integer number (63968974).

Almost surely, 2^127937947 is an apocalyptic number.

127937947 is a deficient number, since it is larger than the sum of its proper divisors (1).

127937947 is an equidigital number, since it uses as much as digits as its factorization.

127937947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 49.

The square root of 127937947 is about 11310.9657854668. The cubic root of 127937947 is about 503.8869673348.

The spelling of 127937947 in words is "one hundred twenty-seven million, nine hundred thirty-seven thousand, nine hundred forty-seven".