9905226 has 16 divisors (see below), whose sum is σ = 20672064. Its totient is φ = 3158144.

The previous prime is 9905221. The next prime is 9905239. The reversal of 9905226 is 6225099.

It is a super-2 number, since 2×9905226² = 196227004222152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9905221) 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, 35751 + ... + 36026.

It is an arithmetic number, because the mean of its divisors is an integer number (1292004).

Almost surely, 2^9905226 is an apocalyptic number.

9905226 is the 1991-st centered pentagonal number.

9905226 is an abundant number, since it is smaller than the sum of its proper divisors (10766838).

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

9905226 is a wasteful number, since it uses less digits than its factorization.

9905226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71805.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 9905226 is about 3147.2569008583. The cubic root of 9905226 is about 214.7606928133.

It can be divided in two parts, 990522 and 6, that added together give a triangular number (990528 = T₁₄₀₇).

The spelling of 9905226 in words is "nine million, nine hundred five thousand, two hundred twenty-six".