90159 has 8 divisors (see below), whose sum is σ = 123312. Its totient is φ = 58560.

The previous prime is 90149. The next prime is 90163. The reversal of 90159 is 95109.

It is a happy number.

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

It is not a de Polignac number, because 90159 - 2⁵ = 90127 is a prime.

90159 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90149) 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, 244 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (15414).

2⁹⁰¹⁵⁹ is an apocalyptic number.

90159 is a deficient number, since it is larger than the sum of its proper divisors (33153).

90159 is a wasteful number, since it uses less digits than its factorization.

90159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 90159 is about 300.2648830616. The cubic root of 90159 is about 44.8404224344.

Subtracting 90159 from its reverse (95109), we obtain a triangular number (4950 = T₉₉).

The spelling of 90159 in words is "ninety thousand, one hundred fifty-nine".