1389662 has 4 divisors (see below), whose sum is σ = 2084496. Its totient is φ = 694830.

The previous prime is 1389643. The next prime is 1389667. The reversal of 1389662 is 2669831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2669831 = 151 ⋅17681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347414 + ... + 347417.

It is an arithmetic number, because the mean of its divisors is an integer number (521124).

2^1389662 is an apocalyptic number.

1389662 is a deficient number, since it is larger than the sum of its proper divisors (694834).

1389662 is an equidigital number, since it uses as much as digits as its factorization.

1389662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694833.

The product of its digits is 15552, while the sum is 35.

The square root of 1389662 is about 1178.8392596109. The cubic root of 1389662 is about 111.5928563491.

The spelling of 1389662 in words is "one million, three hundred eighty-nine thousand, six hundred sixty-two".