1409729 has 4 divisors (see below), whose sum is σ = 1414320. Its totient is φ = 1405140.

The previous prime is 1409717. The next prime is 1409731. The reversal of 1409729 is 9279041.

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.

It is a cyclic number.

It is not a de Polignac number, because 1409729 - 2⁴ = 1409713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1409695 and 1409704.

It is not an unprimeable number, because it can be changed into a prime (1409789) 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, 1799 + ... + 2460.

It is an arithmetic number, because the mean of its divisors is an integer number (353580).

2^1409729 is an apocalyptic number.

It is an amenable number.

1409729 is a deficient number, since it is larger than the sum of its proper divisors (4591).

1409729 is an equidigital number, since it uses as much as digits as its factorization.

1409729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1409729 is about 1187.3200916349. The cubic root of 1409729 is about 112.1274325470.

The spelling of 1409729 in words is "one million, four hundred nine thousand, seven hundred twenty-nine".