90220906969 has 8 divisors (see below), whose sum is σ = 90631693152. Its totient is φ = 89810322720.

The previous prime is 90220906949. The next prime is 90220906973. The reversal of 90220906969 is 96960902209.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90220906969 is a prime.

It is a super-2 number, since 2×90220906969² (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 (90220906949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884334 + ... + 981064.

It is an arithmetic number, because the mean of its divisors is an integer number (11328961644).

Almost surely, 2^90220906969 is an apocalyptic number.

It is an amenable number.

90220906969 is a deficient number, since it is larger than the sum of its proper divisors (410786183).

90220906969 is a wasteful number, since it uses less digits than its factorization.

90220906969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100967.

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 90220906969 in words is "ninety billion, two hundred twenty million, nine hundred six thousand, nine hundred sixty-nine".