90159337 has 4 divisors (see below), whose sum is σ = 90447700. Its totient is φ = 89870976.

The previous prime is 90159319. The next prime is 90159341. The reversal of 90159337 is 73395109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73395109 = 43 ⋅1706863.

It can be written as a sum of positive squares in 2 ways, for example, as 8003241 + 82156096 = 2829^2 + 9064^2 .

It is a cyclic number.

It is not a de Polignac number, because 90159337 - 2¹¹ = 90157289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90159296 and 90159305.

It is not an unprimeable number, because it can be changed into a prime (90159317) 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 3 ways as a sum of consecutive naturals, for example, 143712 + ... + 144337.

It is an arithmetic number, because the mean of its divisors is an integer number (22611925).

Almost surely, 2^90159337 is an apocalyptic number.

It is an amenable number.

90159337 is a deficient number, since it is larger than the sum of its proper divisors (288363).

90159337 is a wasteful number, since it uses less digits than its factorization.

90159337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288362.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 90159337 is about 9495.2270641623. The cubic root of 90159337 is about 448.4047830308.

The spelling of 90159337 in words is "ninety million, one hundred fifty-nine thousand, three hundred thirty-seven".