959945521 has 4 divisors (see below), whose sum is σ = 960548212. Its totient is φ = 959342832.

The previous prime is 959945513. The next prime is 959945533. The reversal of 959945521 is 125549959.

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

It can be written as a sum of positive squares in 2 ways, for example, as 524639025 + 435306496 = 22905^2 + 20864^2 .

It is a cyclic number.

It is not a de Polignac number, because 959945521 - 2³ = 959945513 is a prime.

It is a super-2 number, since 2×959945521² = 1842990806575922882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (959945551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298950 + ... + 302143.

It is an arithmetic number, because the mean of its divisors is an integer number (240137053).

Almost surely, 2^959945521 is an apocalyptic number.

It is an amenable number.

959945521 is a deficient number, since it is larger than the sum of its proper divisors (602691).

959945521 is a wasteful number, since it uses less digits than its factorization.

959945521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602690.

The product of its digits is 729000, while the sum is 49.

The square root of 959945521 is about 30982.9876061041. The cubic root of 959945521 is about 986.4661687170.

The spelling of 959945521 in words is "nine hundred fifty-nine million, nine hundred forty-five thousand, five hundred twenty-one".