956891121 has 8 divisors (see below), whose sum is σ = 1350905184. Its totient is φ = 600402240.

The previous prime is 956891113. The next prime is 956891123. The reversal of 956891121 is 121198659.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 956891121 - 2³ = 956891113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (956891123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9381235 + ... + 9381336.

It is an arithmetic number, because the mean of its divisors is an integer number (168863148).

Almost surely, 2^956891121 is an apocalyptic number.

It is an amenable number.

956891121 is a deficient number, since it is larger than the sum of its proper divisors (394014063).

956891121 is a wasteful number, since it uses less digits than its factorization.

956891121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18762591.

The product of its digits is 38880, while the sum is 42.

The square root of 956891121 is about 30933.6567673465. The cubic root of 956891121 is about 985.4187955199.

The spelling of 956891121 in words is "nine hundred fifty-six million, eight hundred ninety-one thousand, one hundred twenty-one".