12099897 has 12 divisors (see below), whose sum is σ = 17774640. Its totient is φ = 7929528.

The previous prime is 12099883. The next prime is 12099907. The reversal of 12099897 is 79899021.

It is not a de Polignac number, because 12099897 - 2¹¹ = 12097849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12019897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10863 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (1481220).

Almost surely, 2^12099897 is an apocalyptic number.

It is an amenable number.

12099897 is a deficient number, since it is larger than the sum of its proper divisors (5674743).

12099897 is a wasteful number, since it uses less digits than its factorization.

12099897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22852 (or 22849 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 12099897 is about 3478.4906209447. The cubic root of 12099897 is about 229.5763910478.

It can be divided in two parts, 12099 and 897, that added together give a square (12996 = 114²).

The spelling of 12099897 in words is "twelve million, ninety-nine thousand, eight hundred ninety-seven".