90122109 has 48 divisors (see below), whose sum is σ = 154105344. Its totient is φ = 45511200.

The previous prime is 90122099. The next prime is 90122113.

90122109 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 90122109 - 2¹² = 90118013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90122129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 427014 + ... + 427224.

It is an arithmetic number, because the mean of its divisors is an integer number (3210528).

Almost surely, 2^90122109 is an apocalyptic number.

It is an amenable number.

90122109 is a deficient number, since it is larger than the sum of its proper divisors (63983235).

90122109 is a wasteful number, since it uses less digits than its factorization.

90122109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 90122109 is about 9493.2665084259. The cubic root of 90122109 is about 448.3430570836.

The spelling of 90122109 in words is "ninety million, one hundred twenty-two thousand, one hundred nine".