12099406 has 16 divisors (see below), whose sum is σ = 19858608. Its totient is φ = 5483200.

The previous prime is 12099401. The next prime is 12099413. The reversal of 12099406 is 60499021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099401) 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, 9546 + ... + 10738.

It is an arithmetic number, because the mean of its divisors is an integer number (1241163).

Almost surely, 2^12099406 is an apocalyptic number.

12099406 is a deficient number, since it is larger than the sum of its proper divisors (7759202).

12099406 is a wasteful number, since it uses less digits than its factorization.

12099406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667.

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

The square root of 12099406 is about 3478.4200436405. The cubic root of 12099406 is about 229.5732856898.

It can be divided in two parts, 12099 and 406, that multiplied together give a palindrome (4912194).

The spelling of 12099406 in words is "twelve million, ninety-nine thousand, four hundred six".