1348729 has 4 divisors (see below), whose sum is σ = 1428084. Its totient is φ = 1269376.

The previous prime is 1348727. The next prime is 1348733. The reversal of 1348729 is 9278431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9278431 = 293 ⋅31667.

It can be written as a sum of positive squares in 2 ways, for example, as 565504 + 783225 = 752^2 + 885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1348729 - 2¹ = 1348727 is a prime.

It is a Duffinian number.

1348729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1348694 and 1348703.

It is not an unprimeable number, because it can be changed into a prime (1348727) 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, 39652 + ... + 39685.

It is an arithmetic number, because the mean of its divisors is an integer number (357021).

2^1348729 is an apocalyptic number.

It is an amenable number.

1348729 is a deficient number, since it is larger than the sum of its proper divisors (79355).

1348729 is an equidigital number, since it uses as much as digits as its factorization.

1348729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79354.

The product of its digits is 12096, while the sum is 34.

The square root of 1348729 is about 1161.3479237507. The cubic root of 1348729 is about 110.4862495943.

The spelling of 1348729 in words is "one million, three hundred forty-eight thousand, seven hundred twenty-nine".