12905404 has 24 divisors (see below), whose sum is σ = 23154768. Its totient is φ = 6291840.

The previous prime is 12905381. The next prime is 12905407. The reversal of 12905404 is 40450921.

It is a super-4 number, since 4×12905404⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905407) 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, 55272 + ... + 55504.

It is an arithmetic number, because the mean of its divisors is an integer number (964782).

Almost surely, 2^12905404 is an apocalyptic number.

It is an amenable number.

12905404 is a deficient number, since it is larger than the sum of its proper divisors (10249364).

12905404 is a wasteful number, since it uses less digits than its factorization.

12905404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12905404 is about 3592.4092194515. The cubic root of 12905404 is about 234.5617545346.

The spelling of 12905404 in words is "twelve million, nine hundred five thousand, four hundred four".