1493729 has 2 divisors, whose sum is σ = 1493730. Its totient is φ = 1493728.

The previous prime is 1493719. The next prime is 1493731. The reversal of 1493729 is 9273941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 5329 = 1220^2 + 73^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493729 - 2⁸ = 1493473 is a prime.

It is a Sophie Germain prime.

Together with 1493731, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1493719) 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, 746864 + 746865.

It is an arithmetic number, because the mean of its divisors is an integer number (746865).

2^1493729 is an apocalyptic number.

It is an amenable number.

1493729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493729 is an equidigital number, since it uses as much as digits as its factorization.

1493729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 1493729 is about 1222.1820649969. The cubic root of 1493729 is about 114.3116791452.

It can be divided in two parts, 1493 and 729, that added together give a palindrome (2222).

The spelling of 1493729 in words is "one million, four hundred ninety-three thousand, seven hundred twenty-nine".