1389377 has 4 divisors (see below), whose sum is σ = 1515696. Its totient is φ = 1263060.

The previous prime is 1389371. The next prime is 1389383. The reversal of 1389377 is 7739831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1389371) and next prime (1389383).

It is a cyclic number.

It is not a de Polignac number, because 1389377 - 2¹⁰ = 1388353 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389377.

It is not an unprimeable number, because it can be changed into a prime (1389371) 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, 63143 + ... + 63164.

It is an arithmetic number, because the mean of its divisors is an integer number (378924).

2^1389377 is an apocalyptic number.

It is an amenable number.

1389377 is a deficient number, since it is larger than the sum of its proper divisors (126319).

1389377 is a wasteful number, since it uses less digits than its factorization.

1389377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126318.

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

The square root of 1389377 is about 1178.7183717920. The cubic root of 1389377 is about 111.5852271226.

The spelling of 1389377 in words is "one million, three hundred eighty-nine thousand, three hundred seventy-seven".