2199406 has 16 divisors (see below), whose sum is σ = 3622320. Its totient is φ = 993280.

The previous prime is 2199401. The next prime is 2199427. The reversal of 2199406 is 6049912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199401) 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, 5460 + ... + 5848.

It is an arithmetic number, because the mean of its divisors is an integer number (226395).

2^2199406 is an apocalyptic number.

2199406 is a deficient number, since it is larger than the sum of its proper divisors (1422914).

2199406 is a wasteful number, since it uses less digits than its factorization.

2199406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2199406 is about 1483.0394465421. The cubic root of 2199406 is about 130.0474383085.

The spelling of 2199406 in words is "two million, one hundred ninety-nine thousand, four hundred six".