127933919 has 2 divisors, whose sum is σ = 127933920. Its totient is φ = 127933918.

The previous prime is 127933913. The next prime is 127933957. The reversal of 127933919 is 919339721.

It is a weak prime.

It is an emirp because it is prime and its reverse (919339721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127933919 is a prime.

It is a super-2 number, since 2×127933919² = 32734175261397122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127933919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127933913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63966959 + 63966960.

It is an arithmetic number, because the mean of its divisors is an integer number (63966960).

Almost surely, 2^127933919 is an apocalyptic number.

127933919 is a deficient number, since it is larger than the sum of its proper divisors (1).

127933919 is an equidigital number, since it uses as much as digits as its factorization.

127933919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 44.

The square root of 127933919 is about 11310.7877267678. The cubic root of 127933919 is about 503.8816791513.

The spelling of 127933919 in words is "one hundred twenty-seven million, nine hundred thirty-three thousand, nine hundred nineteen".