1389026 has 4 divisors (see below), whose sum is σ = 2083542. Its totient is φ = 694512.

The previous prime is 1389007. The next prime is 1389083. The reversal of 1389026 is 6209831.

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

It can be written as a sum of positive squares in only one way, i.e., 1030225 + 358801 = 1015^2 + 599^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1389026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347255 + ... + 347258.

2^1389026 is an apocalyptic number.

1389026 is a deficient number, since it is larger than the sum of its proper divisors (694516).

1389026 is an equidigital number, since it uses as much as digits as its factorization.

1389026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694515.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1389026 is about 1178.5694718598. The cubic root of 1389026 is about 111.5758296940.

The spelling of 1389026 in words is "one million, three hundred eighty-nine thousand, twenty-six".