86990973 has 8 divisors (see below), whose sum is σ = 116184000. Its totient is φ = 57895968.

The previous prime is 86990963. The next prime is 86990977. The reversal of 86990973 is 37909968.

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

It is not a de Polignac number, because 86990973 - 2⁹ = 86990461 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86990977) 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, 22408 + ... + 26001.

It is an arithmetic number, because the mean of its divisors is an integer number (14523000).

Almost surely, 2^86990973 is an apocalyptic number.

It is an amenable number.

86990973 is a deficient number, since it is larger than the sum of its proper divisors (29193027).

86990973 is a wasteful number, since it uses less digits than its factorization.

86990973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49011.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 86990973 is about 9326.8951425434. The cubic root of 86990973 is about 443.0894363263.

The spelling of 86990973 in words is "eighty-six million, nine hundred ninety thousand, nine hundred seventy-three".