990226000201 has 9 divisors (see below), whose sum is σ = 997540520301. Its totient is φ = 982964748204.

The previous prime is 990226000193. The next prime is 990226000207. The reversal of 990226000201 is 102000622099.

The square root of 990226000201 is 995101.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 990226000201 - 2³ = 990226000193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990226000207) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 138315460 + ... + 138322618.

It is an arithmetic number, because the mean of its divisors is an integer number (110837835589).

Almost surely, 2^990226000201 is an apocalyptic number.

990226000201 is the 995101-st square number.

990226000201 is the 497551-st centered octagonal number.

It is an amenable number.

990226000201 is a deficient number, since it is larger than the sum of its proper divisors (7314520100).

990226000201 is an frugal number, since it uses more digits than its factorization.

990226000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14596 (or 7298 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 990226000201 in words is "nine hundred ninety billion, two hundred twenty-six million, two hundred one", and thus it is an aban number.