1363729 has 4 divisors (see below), whose sum is σ = 1373680. Its totient is φ = 1353780.

The previous prime is 1363727. The next prime is 1363751. The reversal of 1363729 is 9273631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9273631 = 227 ⋅40853.

It is a cyclic number.

It is not a de Polignac number, because 1363729 - 2¹ = 1363727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1363729.

It is not an unprimeable number, because it can be changed into a prime (1363727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4767 + ... + 5044.

It is an arithmetic number, because the mean of its divisors is an integer number (343420).

2^1363729 is an apocalyptic number.

It is an amenable number.

1363729 is a deficient number, since it is larger than the sum of its proper divisors (9951).

1363729 is an equidigital number, since it uses as much as digits as its factorization.

1363729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950.

The product of its digits is 6804, while the sum is 31.

The square root of 1363729 is about 1167.7880800899. The cubic root of 1363729 is about 110.8943344199.

The spelling of 1363729 in words is "one million, three hundred sixty-three thousand, seven hundred twenty-nine".