8890661473 has 4 divisors (see below), whose sum is σ = 8909699760. Its totient is φ = 8871623188.

The previous prime is 8890661453. The next prime is 8890661531. The reversal of 8890661473 is 3741660988.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8890661473 - 2¹³ = 8890653281 is a prime.

It is a super-2 number, since 2×8890661473² (a number of 21 digits) 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 8890661473.

It is not an unprimeable number, because it can be changed into a prime (8890661453) 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, 9518443 + ... + 9519376.

It is an arithmetic number, because the mean of its divisors is an integer number (2227424940).

Almost surely, 2^8890661473 is an apocalyptic number.

It is an amenable number.

8890661473 is a deficient number, since it is larger than the sum of its proper divisors (19038287).

8890661473 is a wasteful number, since it uses less digits than its factorization.

8890661473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19038286.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 8890661473 is about 94290.3042364378. The cubic root of 8890661473 is about 2071.6260239249.

The spelling of 8890661473 in words is "eight billion, eight hundred ninety million, six hundred sixty-one thousand, four hundred seventy-three".