941665961 has 4 divisors (see below), whose sum is σ = 944880132. Its totient is φ = 938451792.

The previous prime is 941665943. The next prime is 941665979. The reversal of 941665961 is 169566149.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (941665943) and next prime (941665979).

It can be written as a sum of positive squares in 2 ways, for example, as 436810000 + 504855961 = 20900^2 + 22469^2 .

It is a cyclic number.

It is not a de Polignac number, because 941665961 - 2¹⁸ = 941403817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (941665661) 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, 1606646 + ... + 1607231.

It is an arithmetic number, because the mean of its divisors is an integer number (236220033).

Almost surely, 2^941665961 is an apocalyptic number.

It is an amenable number.

941665961 is a deficient number, since it is larger than the sum of its proper divisors (3214171).

941665961 is a wasteful number, since it uses less digits than its factorization.

941665961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214170.

The product of its digits is 349920, while the sum is 47.

The square root of 941665961 is about 30686.5762345688. The cubic root of 941665961 is about 980.1644736443.

The spelling of 941665961 in words is "nine hundred forty-one million, six hundred sixty-five thousand, nine hundred sixty-one".