1478729 has 4 divisors (see below), whose sum is σ = 1689984. Its totient is φ = 1267476.

The previous prime is 1478723. The next prime is 1478759. The reversal of 1478729 is 9278741.

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: 9278741 = 241 ⋅38501.

It is not a de Polignac number, because 1478729 - 2¹² = 1474633 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1478692 and 1478701.

It is not an unprimeable number, because it can be changed into a prime (1478723) 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, 105617 + ... + 105630.

It is an arithmetic number, because the mean of its divisors is an integer number (422496).

2^1478729 is an apocalyptic number.

It is an amenable number.

1478729 is a deficient number, since it is larger than the sum of its proper divisors (211255).

1478729 is an equidigital number, since it uses as much as digits as its factorization.

1478729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211254.

The product of its digits is 28224, while the sum is 38.

The square root of 1478729 is about 1216.0300160769. The cubic root of 1478729 is about 113.9277525198.

The spelling of 1478729 in words is "one million, four hundred seventy-eight thousand, seven hundred twenty-nine".