9009001002 has 8 divisors (see below), whose sum is σ = 18018002016. Its totient is φ = 3003000332.

The previous prime is 9009000977. The next prime is 9009001007. The reversal of 9009001002 is 2001009009.

It is a happy number.

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

9009001002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 9009001002.

It is not an unprimeable number, because it can be changed into a prime (9009001007) 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, 750750078 + ... + 750750089.

It is an arithmetic number, because the mean of its divisors is an integer number (2252250252).

Almost surely, 2^9009001002 is an apocalyptic number.

9009001002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9009001002 is a wasteful number, since it uses less digits than its factorization.

9009001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501500172.

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

The square root of 9009001002 is about 94915.7573957033. The cubic root of 9009001002 is about 2080.7770304769. Note that the first 3 decimals are identical.

The spelling of 9009001002 in words is "nine billion, nine million, one thousand, two".