9280861 has 4 divisors (see below), whose sum is σ = 9826812. Its totient is φ = 8734912.

The previous prime is 9280849. The next prime is 9280871. The reversal of 9280861 is 1680829.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1680829 = 67 ⋅25087.

It can be written as a sum of positive squares in 2 ways, for example, as 7458361 + 1822500 = 2731^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 9280861 - 2⁵ = 9280829 is a prime.

It is a super-2 number, since 2×9280861² = 172268761802642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9280871) 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, 272950 + ... + 272983.

It is an arithmetic number, because the mean of its divisors is an integer number (2456703).

Almost surely, 2^9280861 is an apocalyptic number.

It is an amenable number.

9280861 is a deficient number, since it is larger than the sum of its proper divisors (545951).

9280861 is a wasteful number, since it uses less digits than its factorization.

9280861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545950.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 9280861 is about 3046.4505576162. The cubic root of 9280861 is about 210.1500137492.

The spelling of 9280861 in words is "nine million, two hundred eighty thousand, eight hundred sixty-one".