1493389 has 2 divisors, whose sum is σ = 1493390. Its totient is φ = 1493388.

The previous prime is 1493383. The next prime is 1493423. The reversal of 1493389 is 9833941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 189225 = 1142^2 + 435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1493389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1493383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746694 + 746695.

It is an arithmetic number, because the mean of its divisors is an integer number (746695).

2^1493389 is an apocalyptic number.

It is an amenable number.

1493389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493389 is an equidigital number, since it uses as much as digits as its factorization.

1493389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 1493389 is about 1222.0429616016. The cubic root of 1493389 is about 114.3030053451.

The spelling of 1493389 in words is "one million, four hundred ninety-three thousand, three hundred eighty-nine".