1377913 has 2 divisors, whose sum is σ = 1377914. Its totient is φ = 1377912.

The previous prime is 1377911. The next prime is 1377923. The reversal of 1377913 is 3197731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 13689 = 1168^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377913 - 2¹ = 1377911 is a prime.

Together with 1377911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1377911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688956 + 688957.

It is an arithmetic number, because the mean of its divisors is an integer number (688957).

2^1377913 is an apocalyptic number.

It is an amenable number.

1377913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377913 is an equidigital number, since it uses as much as digits as its factorization.

1377913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969, while the sum is 31.

The square root of 1377913 is about 1173.8453901600. The cubic root of 1377913 is about 111.2774758547.

The spelling of 1377913 in words is "one million, three hundred seventy-seven thousand, nine hundred thirteen".