90008727290 has 8 divisors (see below), whose sum is σ = 162015709140. Its totient is φ = 36003490912.

The previous prime is 90008727287. The next prime is 90008727299. The reversal of 90008727290 is 9272780009.

It can be written as a sum of positive squares in 2 ways, for example, as 73885568761 + 16123158529 = 271819^2 + 126977^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90008727299) 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, 4500436355 + ... + 4500436374.

Almost surely, 2^90008727290 is an apocalyptic number.

90008727290 is a deficient number, since it is larger than the sum of its proper divisors (72006981850).

90008727290 is a wasteful number, since it uses less digits than its factorization.

90008727290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000872736.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 90008727290 in words is "ninety billion, eight million, seven hundred twenty-seven thousand, two hundred ninety".