90905073 has 8 divisors (see below), whose sum is σ = 138522048. Its totient is φ = 51945744.

The previous prime is 90905071. The next prime is 90905081. The reversal of 90905073 is 37050909.

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

It is not a de Polignac number, because 90905073 - 2¹ = 90905071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90905071) 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, 2164386 + ... + 2164427.

It is an arithmetic number, because the mean of its divisors is an integer number (17315256).

Almost surely, 2^90905073 is an apocalyptic number.

It is an amenable number.

90905073 is a deficient number, since it is larger than the sum of its proper divisors (47616975).

90905073 is a wasteful number, since it uses less digits than its factorization.

90905073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328823.

The product of its (nonzero) digits is 8505, while the sum is 33.

The square root of 90905073 is about 9534.4151891975. The cubic root of 90905073 is about 449.6376886151.

The spelling of 90905073 in words is "ninety million, nine hundred five thousand, seventy-three".