90240886 has 4 divisors (see below), whose sum is σ = 135361332. Its totient is φ = 45120442.

The previous prime is 90240883. The next prime is 90240919. The reversal of 90240886 is 68804209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68804209 = 89 ⋅773081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90240883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22560220 + ... + 22560223.

It is an arithmetic number, because the mean of its divisors is an integer number (33840333).

Almost surely, 2^90240886 is an apocalyptic number.

90240886 is a deficient number, since it is larger than the sum of its proper divisors (45120446).

90240886 is a wasteful number, since it uses less digits than its factorization.

90240886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45120445.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 90240886 is about 9499.5203036785. The cubic root of 90240886 is about 448.5399361330.

The spelling of 90240886 in words is "ninety million, two hundred forty thousand, eight hundred eighty-six".