406891127 has 2 divisors, whose sum is σ = 406891128. Its totient is φ = 406891126.

The previous prime is 406891063. The next prime is 406891129. The reversal of 406891127 is 721198604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406891127 - 2⁶ = 406891063 is a prime.

Together with 406891129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406891129) 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, 203445563 + 203445564.

It is an arithmetic number, because the mean of its divisors is an integer number (203445564).

Almost surely, 2^406891127 is an apocalyptic number.

406891127 is a deficient number, since it is larger than the sum of its proper divisors (1).

406891127 is an equidigital number, since it uses as much as digits as its factorization.

406891127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 406891127 is about 20171.5425042311. The cubic root of 406891127 is about 741.0134197563.

The spelling of 406891127 in words is "four hundred six million, eight hundred ninety-one thousand, one hundred twenty-seven".