1389266 has 4 divisors (see below), whose sum is σ = 2083902. Its totient is φ = 694632.

The previous prime is 1389259. The next prime is 1389277. The reversal of 1389266 is 6629831.

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., 1357225 + 32041 = 1165^2 + 179^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347315 + ... + 347318.

2^1389266 is an apocalyptic number.

1389266 is a deficient number, since it is larger than the sum of its proper divisors (694636).

1389266 is an equidigital number, since it uses as much as digits as its factorization.

1389266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694635.

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

The square root of 1389266 is about 1178.6712858130. The cubic root of 1389266 is about 111.5822554574.

The spelling of 1389266 in words is "one million, three hundred eighty-nine thousand, two hundred sixty-six".