9396781 has 4 divisors (see below), whose sum is σ = 9483100. Its totient is φ = 9310464.

The previous prime is 9396769. The next prime is 9396791. The reversal of 9396781 is 1876939.

9396781 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, and also an emirpimes, since its reverse is a distinct semiprime: 1876939 = 41 ⋅45779.

It can be written as a sum of positive squares in 2 ways, for example, as 2975625 + 6421156 = 1725^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 9396781 - 2¹⁷ = 9265709 is a prime.

It is a super-2 number, since 2×9396781² = 176598986323922, which contains 22 as substring.

It is a Duffinian number.

9396781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9396701) 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, 42996 + ... + 43213.

It is an arithmetic number, because the mean of its divisors is an integer number (2370775).

Almost surely, 2^9396781 is an apocalyptic number.

It is an amenable number.

9396781 is a deficient number, since it is larger than the sum of its proper divisors (86319).

9396781 is a wasteful number, since it uses less digits than its factorization.

9396781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86318.

The product of its digits is 81648, while the sum is 43.

The square root of 9396781 is about 3065.4169373839. The cubic root of 9396781 is about 211.0213360873.

The spelling of 9396781 in words is "nine million, three hundred ninety-six thousand, seven hundred eighty-one".