8408121 has 4 divisors (see below), whose sum is σ = 11210832. Its totient is φ = 5605412.

The previous prime is 8408117. The next prime is 8408129. The reversal of 8408121 is 1218048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8408121 - 2² = 8408117 is a prime.

8408121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8408091 and 8408100.

It is not an unprimeable number, because it can be changed into a prime (8408129) 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, 1401351 + ... + 1401356.

It is an arithmetic number, because the mean of its divisors is an integer number (2802708).

Almost surely, 2^8408121 is an apocalyptic number.

It is an amenable number.

8408121 is a deficient number, since it is larger than the sum of its proper divisors (2802711).

8408121 is a wasteful number, since it uses less digits than its factorization.

8408121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802710.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 8408121 is about 2899.6760163853. The cubic root of 8408121 is about 203.3447594284.

The spelling of 8408121 in words is "eight million, four hundred eight thousand, one hundred twenty-one".