1323539 has 6 divisors (see below), whose sum is σ = 1539684. Its totient is φ = 1134420.

The previous prime is 1323533. The next prime is 1323541. The reversal of 1323539 is 9353231.

It is not a de Polignac number, because 1323539 - 2¹² = 1319443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13457 + ... + 13554.

It is an arithmetic number, because the mean of its divisors is an integer number (256614).

2^1323539 is an apocalyptic number.

1323539 is a deficient number, since it is larger than the sum of its proper divisors (216145).

1323539 is an equidigital number, since it uses as much as digits as its factorization.

1323539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27025 (or 27018 counting only the distinct ones).

The product of its digits is 2430, while the sum is 26.

The square root of 1323539 is about 1150.4516504399. The cubic root of 1323539 is about 109.7940775591.

The spelling of 1323539 in words is "one million, three hundred twenty-three thousand, five hundred thirty-nine".