1490009 has 4 divisors (see below), whose sum is σ = 1554816. Its totient is φ = 1425204.

The previous prime is 1489997. The next prime is 1490011. The reversal of 1490009 is 9000941.

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 1490009 - 2⁸ = 1489753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 64783 = 1490009 / (1 + 4 + 9 + 0 + 0 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1490029) 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, 32369 + ... + 32414.

It is an arithmetic number, because the mean of its divisors is an integer number (388704).

2^1490009 is an apocalyptic number.

It is an amenable number.

1490009 is a deficient number, since it is larger than the sum of its proper divisors (64807).

1490009 is an equidigital number, since it uses as much as digits as its factorization.

1490009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64806.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1490009 is about 1220.6592481114. The cubic root of 1490009 is about 114.2167058841.

The spelling of 1490009 in words is "one million, four hundred ninety thousand, nine".