900000010 has 32 divisors (see below), whose sum is σ = 1993848192. Its totient is φ = 284834880.

The previous prime is 899999963. The next prime is 900000011. The reversal of 900000010 is 10000009.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (900000011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493596 + ... + 495415.

It is an arithmetic number, because the mean of its divisors is an integer number (62307756).

Almost surely, 2^900000010 is an apocalyptic number.

900000010 is an abundant number, since it is smaller than the sum of its proper divisors (1093848182).

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

900000010 is a wasteful number, since it uses less digits than its factorization.

900000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989038.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 900000010 is about 30000.0001666667. Note that the first 3 decimals coincide. The cubic root of 900000010 is about 965.4893881815.

Subtracting from 900000010 its sum of digits (10), we obtain a square (900000000 = 30000²).

Adding to 900000010 its reverse (10000009), we get a palindrome (910000019).

The spelling of 900000010 in words is "nine hundred million, ten", and thus it is an aban number.