1359891 has 24 divisors (see below), whose sum is σ = 2162160. Its totient is φ = 818496.

The previous prime is 1359871. The next prime is 1359901. The reversal of 1359891 is 1989531.

It is a happy number.

It is not a de Polignac number, because 1359891 - 2⁵ = 1359859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1359871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6805 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2^1359891 is an apocalyptic number.

1359891 is a deficient number, since it is larger than the sum of its proper divisors (802269).

1359891 is a wasteful number, since it uses less digits than its factorization.

1359891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 272 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 1359891 is about 1166.1436446682. The cubic root of 1359891 is about 110.7902051406.

It can be divided in two parts, 13598 and 91, that added together give a square (13689 = 117²).

The spelling of 1359891 in words is "one million, three hundred fifty-nine thousand, eight hundred ninety-one".