90286239 has 8 divisors (see below), whose sum is σ = 121047472. Its totient is φ = 59857920.

The previous prime is 90286237. The next prime is 90286241. The reversal of 90286239 is 93268209.

It is an interprime number because it is at equal distance from previous prime (90286237) and next prime (90286241).

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

It is not a de Polignac number, because 90286239 - 2¹ = 90286237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90286197 and 90286206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90286237) 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, 82594 + ... + 83679.

It is an arithmetic number, because the mean of its divisors is an integer number (15130934).

Almost surely, 2^90286239 is an apocalyptic number.

90286239 is a deficient number, since it is larger than the sum of its proper divisors (30761233).

90286239 is a wasteful number, since it uses less digits than its factorization.

90286239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166457.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 90286239 is about 9501.9071243619. The cubic root of 90286239 is about 448.6150655104.

It can be divided in two parts, 90286 and 239, that added together give a triangular number (90525 = T₄₂₅).

The spelling of 90286239 in words is "ninety million, two hundred eighty-six thousand, two hundred thirty-nine".