2169406 has 8 divisors (see below), whose sum is σ = 3395664. Its totient is φ = 1037520.

The previous prime is 2169397. The next prime is 2169443. The reversal of 2169406 is 6049612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23535 + ... + 23626.

It is an arithmetic number, because the mean of its divisors is an integer number (424458).

2^2169406 is an apocalyptic number.

2169406 is a deficient number, since it is larger than the sum of its proper divisors (1226258).

2169406 is a wasteful number, since it uses less digits than its factorization.

2169406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47186.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2169406 is about 1472.8903557292. The cubic root of 2169406 is about 129.4534450009.

The spelling of 2169406 in words is "two million, one hundred sixty-nine thousand, four hundred six".