90299885 has 8 divisors (see below), whose sum is σ = 116695320. Its totient is φ = 66682944.

The previous prime is 90299873. The next prime is 90299887. The reversal of 90299885 is 58899209.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 90288004 = 109^2 + 9502^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90299885 - 2¹⁰ = 90298861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90299887) 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 7 ways as a sum of consecutive naturals, for example, 694550 + ... + 694679.

It is an arithmetic number, because the mean of its divisors is an integer number (14586915).

Almost surely, 2^90299885 is an apocalyptic number.

It is an amenable number.

90299885 is a deficient number, since it is larger than the sum of its proper divisors (26395435).

90299885 is a wasteful number, since it uses less digits than its factorization.

90299885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389247.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 90299885 is about 9502.6251636061. The cubic root of 90299885 is about 448.6376658271.

The spelling of 90299885 in words is "ninety million, two hundred ninety-nine thousand, eight hundred eighty-five".