8121404 has 12 divisors (see below), whose sum is σ = 14233128. Its totient is φ = 4054800.

The previous prime is 8121401. The next prime is 8121419. The reversal of 8121404 is 4041218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121401) 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, 3434 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (1186094).

Almost surely, 2^8121404 is an apocalyptic number.

It is an amenable number.

8121404 is a deficient number, since it is larger than the sum of its proper divisors (6111724).

8121404 is a wasteful number, since it uses less digits than its factorization.

8121404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 2954 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 8121404 is about 2849.8077128115. The cubic root of 8121404 is about 201.0066250302.

The spelling of 8121404 in words is "eight million, one hundred twenty-one thousand, four hundred four".