9001020207 has 4 divisors (see below), whose sum is σ = 12001360280. Its totient is φ = 6000680136.

The previous prime is 9001020179. The next prime is 9001020211. The reversal of 9001020207 is 7020201009.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9001020207 - 2⁷ = 9001020079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9001020227) 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, 1500170032 + ... + 1500170037.

It is an arithmetic number, because the mean of its divisors is an integer number (3000340070).

Almost surely, 2^9001020207 is an apocalyptic number.

9001020207 is a deficient number, since it is larger than the sum of its proper divisors (3000340073).

9001020207 is a wasteful number, since it uses less digits than its factorization.

9001020207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000340072.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 9001020207 is about 94873.7066156899. The cubic root of 9001020207 is about 2080.1624169740.

The spelling of 9001020207 in words is "nine billion, one million, twenty thousand, two hundred seven".