1377389 has 4 divisors (see below), whose sum is σ = 1483356. Its totient is φ = 1271424.

The previous prime is 1377379. The next prime is 1377403. The reversal of 1377389 is 9837731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100489 + 1276900 = 317^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377389 - 2⁸ = 1377133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52964 + ... + 52989.

It is an arithmetic number, because the mean of its divisors is an integer number (370839).

2^1377389 is an apocalyptic number.

It is an amenable number.

1377389 is a deficient number, since it is larger than the sum of its proper divisors (105967).

1377389 is a wasteful number, since it uses less digits than its factorization.

1377389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105966.

The product of its digits is 31752, while the sum is 38.

The square root of 1377389 is about 1173.6221708881. The cubic root of 1377389 is about 111.2633683384.

The spelling of 1377389 in words is "one million, three hundred seventy-seven thousand, three hundred eighty-nine".