8961749 has 4 divisors (see below), whose sum is σ = 9433440. Its totient is φ = 8490060.

The previous prime is 8961731. The next prime is 8961751. The reversal of 8961749 is 9471698.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9471698 = 2 ⋅4735849.

It is a cyclic number.

It is not a de Polignac number, because 8961749 - 2¹² = 8957653 is a prime.

It is a super-3 number, since 3×8961749³ (a number of 22 digits) contains 333 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 (8961709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235817 + ... + 235854.

It is an arithmetic number, because the mean of its divisors is an integer number (2358360).

Almost surely, 2^8961749 is an apocalyptic number.

It is an amenable number.

8961749 is a deficient number, since it is larger than the sum of its proper divisors (471691).

8961749 is a wasteful number, since it uses less digits than its factorization.

8961749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471690.

The product of its digits is 108864, while the sum is 44.

The square root of 8961749 is about 2993.6180451086. The cubic root of 8961749 is about 207.7132775879.

The spelling of 8961749 in words is "eight million, nine hundred sixty-one thousand, seven hundred forty-nine".