9487861 has 4 divisors (see below), whose sum is σ = 9585772. Its totient is φ = 9389952.

The previous prime is 9487837. The next prime is 9487867. The reversal of 9487861 is 1687849.

9487861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5202961 + 4284900 = 2281^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 9487861 - 2⁷ = 9487733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9487867) 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, 48810 + ... + 49003.

It is an arithmetic number, because the mean of its divisors is an integer number (2396443).

Almost surely, 2^9487861 is an apocalyptic number.

It is an amenable number.

9487861 is a deficient number, since it is larger than the sum of its proper divisors (97911).

9487861 is an equidigital number, since it uses as much as digits as its factorization.

9487861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97910.

The product of its digits is 96768, while the sum is 43.

The square root of 9487861 is about 3080.2371661935. The cubic root of 9487861 is about 211.7009325833.

The spelling of 9487861 in words is "nine million, four hundred eighty-seven thousand, eight hundred sixty-one".