90973081 has 8 divisors (see below), whose sum is σ = 92968128. Its totient is φ = 88998000.

The previous prime is 90973067. The next prime is 90973093. The reversal of 90973081 is 18037909.

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 90973081 - 2¹¹ = 90971033 is a prime.

It is a super-2 number, since 2×90973081² = 16552202933265122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90973081.

It is not an unprimeable number, because it can be changed into a prime (90973031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4411 + ... + 14191.

It is an arithmetic number, because the mean of its divisors is an integer number (11621016).

Almost surely, 2^90973081 is an apocalyptic number.

It is an amenable number.

90973081 is a deficient number, since it is larger than the sum of its proper divisors (1995047).

90973081 is a wasteful number, since it uses less digits than its factorization.

90973081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 90973081 is about 9537.9809708344. The cubic root of 90973081 is about 449.7497884738.

The spelling of 90973081 in words is "ninety million, nine hundred seventy-three thousand, eighty-one".