127996091 has 2 divisors, whose sum is σ = 127996092. Its totient is φ = 127996090.

The previous prime is 127996049. The next prime is 127996097. The reversal of 127996091 is 190699721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127996091 - 2²² = 123801787 is a prime.

It is a super-2 number, since 2×127996091² = 32765998622560562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127996097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63998045 + 63998046.

It is an arithmetic number, because the mean of its divisors is an integer number (63998046).

Almost surely, 2^127996091 is an apocalyptic number.

127996091 is a deficient number, since it is larger than the sum of its proper divisors (1).

127996091 is an equidigital number, since it uses as much as digits as its factorization.

127996091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 127996091 is about 11313.5357426403. The cubic root of 127996091 is about 503.9632896647.

The spelling of 127996091 in words is "one hundred twenty-seven million, nine hundred ninety-six thousand, ninety-one".