127733891 has 2 divisors, whose sum is σ = 127733892. Its totient is φ = 127733890.

The previous prime is 127733849. The next prime is 127733917. The reversal of 127733891 is 198337721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127733891 - 2²⁶ = 60625027 is a prime.

It is not a weakly prime, because it can be changed into another prime (127733831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63866945 + 63866946.

It is an arithmetic number, because the mean of its divisors is an integer number (63866946).

Almost surely, 2^127733891 is an apocalyptic number.

127733891 is a deficient number, since it is larger than the sum of its proper divisors (1).

127733891 is an equidigital number, since it uses as much as digits as its factorization.

127733891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 127733891 is about 11301.9419127865. The cubic root of 127733891 is about 503.6189314754.

The spelling of 127733891 in words is "one hundred twenty-seven million, seven hundred thirty-three thousand, eight hundred ninety-one".