961543927 has 4 divisors (see below), whose sum is σ = 961606080. Its totient is φ = 961481776.

The previous prime is 961543909. The next prime is 961543939. The reversal of 961543927 is 729345169.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 961543927 - 2²³ = 953155319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961543327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12474 + ... + 45592.

It is an arithmetic number, because the mean of its divisors is an integer number (240401520).

Almost surely, 2^961543927 is an apocalyptic number.

961543927 is a deficient number, since it is larger than the sum of its proper divisors (62153).

961543927 is a wasteful number, since it uses less digits than its factorization.

961543927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62152.

The product of its digits is 408240, while the sum is 46.

The square root of 961543927 is about 31008.7717750962. The cubic root of 961543927 is about 987.0133869549.

The spelling of 961543927 in words is "nine hundred sixty-one million, five hundred forty-three thousand, nine hundred twenty-seven".