2129408 has 20 divisors (see below), whose sum is σ = 4255680. Its totient is φ = 1064448.

The previous prime is 2129401. The next prime is 2129419. The reversal of 2129408 is 8049212.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1568 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (212784).

2^2129408 is an apocalyptic number.

It is an amenable number.

2129408 is a deficient number, since it is larger than the sum of its proper divisors (2126272).

2129408 is an frugal number, since it uses more digits than its factorization.

2129408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177 (or 4161 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2129408 is about 1459.2491219802. The cubic root of 2129408 is about 128.6529138954.

The spelling of 2129408 in words is "two million, one hundred twenty-nine thousand, four hundred eight".