1356039 has 12 divisors (see below), whose sum is σ = 2074176. Its totient is φ = 850752.

The previous prime is 1356037. The next prime is 1356053. The reversal of 1356039 is 9306531.

It is not a de Polignac number, because 1356039 - 2¹ = 1356037 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4279 + ... + 4584.

It is an arithmetic number, because the mean of its divisors is an integer number (172848).

2^1356039 is an apocalyptic number.

1356039 is a deficient number, since it is larger than the sum of its proper divisors (718137).

1356039 is a wasteful number, since it uses less digits than its factorization.

1356039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886 (or 8883 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 1356039 is about 1164.4908758767. The cubic root of 1356039 is about 110.6854988435.

The spelling of 1356039 in words is "one million, three hundred fifty-six thousand, thirty-nine".