1377793 has 2 divisors, whose sum is σ = 1377794. Its totient is φ = 1377792.

The previous prime is 1377791. The next prime is 1377811. The reversal of 1377793 is 3977731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 237169 = 1068^2 + 487^2 .

It is an emirp because it is prime and its reverse (3977731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1377793 - 2¹ = 1377791 is a prime.

Together with 1377791, it forms a pair of twin primes.

It is an Ulam number.

1377793 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1377791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688896 + 688897.

It is an arithmetic number, because the mean of its divisors is an integer number (688897).

2^1377793 is an apocalyptic number.

It is an amenable number.

1377793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377793 is an equidigital number, since it uses as much as digits as its factorization.

1377793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27783, while the sum is 37.

The square root of 1377793 is about 1173.7942749903. The cubic root of 1377793 is about 111.2742454416.

The spelling of 1377793 in words is "one million, three hundred seventy-seven thousand, seven hundred ninety-three".