90959385531169 has 3 divisors (see below), whose sum is σ = 90959395068433. Its totient is φ = 90959375993906.

The previous prime is 90959385531127. The next prime is 90959385531187. The reversal of 90959385531169 is 96113558395909.

The square root of 90959385531169 is 9537263.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 90959385531169 - 2⁴¹ = 88760362275617 is a prime.

It is a super-2 number, since 2×90959385531169² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90959385531109) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4768632 + ... + 14305894.

Almost surely, 2^{90959385531169} is an apocalyptic number.

90959385531169 is the 9537263-rd square number.

90959385531169 is the 4768632-nd centered octagonal number.

It is an amenable number.

90959385531169 is a deficient number, since it is larger than the sum of its proper divisors (9537264).

90959385531169 is an frugal number, since it uses more digits than its factorization.

90959385531169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19074526 (or 9537263 counting only the distinct ones).

The product of its (nonzero) digits is 354294000, while the sum is 73.

The spelling of 90959385531169 in words is "ninety trillion, nine hundred fifty-nine billion, three hundred eighty-five million, five hundred thirty-one thousand, one hundred sixty-nine".