9408121 has 4 divisors (see below), whose sum is σ = 9422244. Its totient is φ = 9394000.

The previous prime is 9408109. The next prime is 9408137. The reversal of 9408121 is 1218049.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1218049 = 7 ⋅174007.

It can be written as a sum of positive squares in 2 ways, for example, as 8526400 + 881721 = 2920^2 + 939^2 .

It is a cyclic number.

It is not a de Polignac number, because 9408121 - 2¹¹ = 9406073 is a prime.

It is a Duffinian number.

9408121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9400121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6010 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (2355561).

Almost surely, 2^9408121 is an apocalyptic number.

It is an amenable number.

9408121 is a deficient number, since it is larger than the sum of its proper divisors (14123).

9408121 is a wasteful number, since it uses less digits than its factorization.

9408121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14122.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 9408121 is about 3067.2660464981. The cubic root of 9408121 is about 211.1061885484.

The spelling of 9408121 in words is "nine million, four hundred eight thousand, one hundred twenty-one".