90229219208 has 36 divisors (see below), whose sum is σ = 172097541135. Its totient is φ = 44349537600.

The previous prime is 90229219207. The next prime is 90229219229. The reversal of 90229219208 is 80291292209.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 26290028164 + 63939191044 = 162142^2 + 252862^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=212402.

It is a super-2 number, since 2×90229219208² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90229219207) 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, 51825218 + ... + 51826958.

Almost surely, 2^90229219208 is an apocalyptic number.

It is an amenable number.

90229219208 is a deficient number, since it is larger than the sum of its proper divisors (81868321927).

90229219208 is an frugal number, since it uses more digits than its factorization.

90229219208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 90229219208 in words is "ninety billion, two hundred twenty-nine million, two hundred nineteen thousand, two hundred eight".