1377911 has 2 divisors, whose sum is σ = 1377912. Its totient is φ = 1377910.

The previous prime is 1377881. The next prime is 1377913. The reversal of 1377911 is 1197731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1377911 - 2⁶ = 1377847 is a prime.

Together with 1377913, 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 (1377913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688955 + 688956.

It is an arithmetic number, because the mean of its divisors is an integer number (688956).

2^1377911 is an apocalyptic number.

1377911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377911 is an equidigital number, since it uses as much as digits as its factorization.

1377911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323, while the sum is 29.

The square root of 1377911 is about 1173.8445382588. The cubic root of 1377911 is about 111.2774220160.

The spelling of 1377911 in words is "one million, three hundred seventy-seven thousand, nine hundred eleven".