200900090 has 16 divisors (see below), whose sum is σ = 369315072. Its totient is φ = 78650064.

The previous prime is 200900087. The next prime is 200900093. The reversal of 200900090 is 90009002.

It is an interprime number because it is at equal distance from previous prime (200900087) and next prime (200900093).

It is not an unprimeable number, because it can be changed into a prime (200900093) 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, 213254 + ... + 214193.

It is an arithmetic number, because the mean of its divisors is an integer number (23082192).

Almost surely, 2^200900090 is an apocalyptic number.

200900090 is a deficient number, since it is larger than the sum of its proper divisors (168414982).

200900090 is a wasteful number, since it uses less digits than its factorization.

200900090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427501.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 200900090 is about 14173.9228867664. The cubic root of 200900090 is about 585.6795278941.

Adding to 200900090 its reverse (90009002), we get a palindrome (290909092).

The spelling of 200900090 in words is "two hundred million, nine hundred thousand, ninety".