1386289 has 8 divisors (see below), whose sum is σ = 1444608. Its totient is φ = 1328880.

The previous prime is 1386283. The next prime is 1386293. The reversal of 1386289 is 9826831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1386289 - 2⁹ = 1385777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1386283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5994 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (180576).

2^1386289 is an apocalyptic number.

It is an amenable number.

1386289 is a deficient number, since it is larger than the sum of its proper divisors (58319).

1386289 is a wasteful number, since it uses less digits than its factorization.

1386289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its digits is 20736, while the sum is 37.

The square root of 1386289 is about 1177.4077458553. The cubic root of 1386289 is about 111.5024968104.

The spelling of 1386289 in words is "one million, three hundred eighty-six thousand, two hundred eighty-nine".