12009854 has 16 divisors (see below), whose sum is σ = 19145808. Its totient is φ = 5630592.

The previous prime is 12009827. The next prime is 12009859. The reversal of 12009854 is 45890021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009859) 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, 12209 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (1196613).

Almost surely, 2^12009854 is an apocalyptic number.

12009854 is a deficient number, since it is larger than the sum of its proper divisors (7135954).

12009854 is a wasteful number, since it uses less digits than its factorization.

12009854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12009854 is about 3465.5236256589. The cubic root of 12009854 is about 229.0054981105.

Adding to 12009854 its reverse (45890021), we get a palindrome (57899875).

The spelling of 12009854 in words is "twelve million, nine thousand, eight hundred fifty-four".