1355389 has 12 divisors (see below), whose sum is σ = 1596000. Its totient is φ = 1147608.

The previous prime is 1355371. The next prime is 1355399. The reversal of 1355389 is 9835531.

It is not a de Polignac number, because 1355389 - 2⁵ = 1355357 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 (1355309) 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 11 ways as a sum of consecutive naturals, for example, 6712 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (133000).

2^1355389 is an apocalyptic number.

It is an amenable number.

1355389 is a deficient number, since it is larger than the sum of its proper divisors (240611).

1355389 is a wasteful number, since it uses less digits than its factorization.

1355389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 345 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 1355389 is about 1164.2117504990. The cubic root of 1355389 is about 110.6678107896.

The spelling of 1355389 in words is "one million, three hundred fifty-five thousand, three hundred eighty-nine".