1339505 has 4 divisors (see below), whose sum is σ = 1607412. Its totient is φ = 1071600.

The previous prime is 1339487. The next prime is 1339523. The reversal of 1339505 is 5059331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5059331 = 263 ⋅19237.

It is an interprime number because it is at equal distance from previous prime (1339487) and next prime (1339523).

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 579121 = 872^2 + 761^2 .

It is not a de Polignac number, because 1339505 - 2¹⁰ = 1338481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133946 + ... + 133955.

It is an arithmetic number, because the mean of its divisors is an integer number (401853).

2^1339505 is an apocalyptic number.

It is an amenable number.

1339505 is a deficient number, since it is larger than the sum of its proper divisors (267907).

1339505 is an equidigital number, since it uses as much as digits as its factorization.

1339505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267906.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 1339505 is about 1157.3698630948. The cubic root of 1339505 is about 110.2338002363.

The spelling of 1339505 in words is "one million, three hundred thirty-nine thousand, five hundred five".