1500009 has 8 divisors (see below), whose sum is σ = 2285760. Its totient is φ = 857136.

The previous prime is 1500007. The next prime is 1500019. The reversal of 1500009 is 9000051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1500009 - 2¹ = 1500007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1500007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35694 + ... + 35735.

It is an arithmetic number, because the mean of its divisors is an integer number (285720).

2^1500009 is an apocalyptic number.

It is an amenable number.

1500009 is a deficient number, since it is larger than the sum of its proper divisors (785751).

1500009 is an equidigital number, since it uses as much as digits as its factorization.

1500009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71439.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 1500009 is about 1224.7485456207. The cubic root of 1500009 is about 114.4716531977.

The spelling of 1500009 in words is "one million, five hundred thousand, nine".