9958121 has 8 divisors (see below), whose sum is σ = 10319400. Its totient is φ = 9602560.

The previous prime is 9958093. The next prime is 9958129. The reversal of 9958121 is 1218599.

It can be written as a sum of positive squares in 4 ways, for example, as 570025 + 9388096 = 755^2 + 3064^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9958121 - 2²² = 5763817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9958129) 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, 2285 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (1289925).

Almost surely, 2^9958121 is an apocalyptic number.

It is an amenable number.

9958121 is a deficient number, since it is larger than the sum of its proper divisors (361279).

9958121 is a wasteful number, since it uses less digits than its factorization.

9958121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859.

The product of its digits is 6480, while the sum is 35.

The square root of 9958121 is about 3155.6490616037. The cubic root of 9958121 is about 215.1422962827.

The spelling of 9958121 in words is "nine million, nine hundred fifty-eight thousand, one hundred twenty-one".