1009002009 has 8 divisors (see below), whose sum is σ = 1376623072. Its totient is φ = 657024480.

The previous prime is 1009001993. The next prime is 1009002013. The reversal of 1009002009 is 9002009001.

It is a happy number.

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

It is not a de Polignac number, because 1009002009 - 2⁴ = 1009001993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009002409) 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, 3910732 + ... + 3910989.

It is an arithmetic number, because the mean of its divisors is an integer number (172077884).

Almost surely, 2^1009002009 is an apocalyptic number.

It is an amenable number.

1009002009 is a deficient number, since it is larger than the sum of its proper divisors (367621063).

1009002009 is an equidigital number, since it uses as much as digits as its factorization.

1009002009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821767.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1009002009 is about 31764.7919716154. The cubic root of 1009002009 is about 1002.9917104099.

The spelling of 1009002009 in words is "one billion, nine million, two thousand, nine".