943656961 has 27 divisors (see below), whose sum is σ = 1093338441. Its totient is φ = 813930624.

The previous prime is 943656947. The next prime is 943656979. The reversal of 943656961 is 169656349.

The square root of 943656961 is 30719.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8520561 + 935136400 = 2919^2 + 30580^2 .

It is not a de Polignac number, because 943656961 - 2¹⁵ = 943624193 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (943656761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6788830 + ... + 6788968.

Almost surely, 2^943656961 is an apocalyptic number.

943656961 is the 30719-th square number.

943656961 is the 15360-th centered octagonal number.

It is an amenable number.

943656961 is a deficient number, since it is larger than the sum of its proper divisors (149681480).

943656961 is a wasteful number, since it uses less digits than its factorization.

943656961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 169 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 49.

The cubic root of 943656961 is about 980.8547869751.

Multiplying 943656961 by its sum of digits (49), we get a square (46239191089 = 215033²).

The spelling of 943656961 in words is "nine hundred forty-three million, six hundred fifty-six thousand, nine hundred sixty-one".