1396539 has 6 divisors (see below), whose sum is σ = 2017236. Its totient is φ = 931020.

The previous prime is 1396531. The next prime is 1396541. The reversal of 1396539 is 9356931.

It is not a de Polignac number, because 1396539 - 2³ = 1396531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1396531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77577 + ... + 77594.

It is an arithmetic number, because the mean of its divisors is an integer number (336206).

2^1396539 is an apocalyptic number.

1396539 is a deficient number, since it is larger than the sum of its proper divisors (620697).

1396539 is a wasteful number, since it uses less digits than its factorization.

1396539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155177 (or 155174 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 1396539 is about 1181.7525121615. The cubic root of 1396539 is about 111.7766328426.

The spelling of 1396539 in words is "one million, three hundred ninety-six thousand, five hundred thirty-nine".