90289886 has 8 divisors (see below), whose sum is σ = 136246320. Its totient is φ = 44874448.

The previous prime is 90289817. The next prime is 90289889. The reversal of 90289886 is 68898209.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90289889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134831 + ... + 135498.

It is an arithmetic number, because the mean of its divisors is an integer number (17030790).

Almost surely, 2^90289886 is an apocalyptic number.

90289886 is a deficient number, since it is larger than the sum of its proper divisors (45956434).

90289886 is a wasteful number, since it uses less digits than its factorization.

90289886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270498.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 90289886 is about 9502.0990312667. The cubic root of 90289886 is about 448.6211058444.

The spelling of 90289886 in words is "ninety million, two hundred eighty-nine thousand, eight hundred eighty-six".