12819961 has 16 divisors (see below), whose sum is σ = 16063488. Its totient is φ = 9939600.

The previous prime is 12819959. The next prime is 12819967. The reversal of 12819961 is 16991821.

It is not a de Polignac number, because 12819961 - 2¹ = 12819959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12819961.

It is not an unprimeable number, because it can be changed into a prime (12819967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25236 + ... + 25738.

It is an arithmetic number, because the mean of its divisors is an integer number (1003968).

Almost surely, 2^12819961 is an apocalyptic number.

12819961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12819961 is a deficient number, since it is larger than the sum of its proper divisors (3243527).

12819961 is a wasteful number, since it uses less digits than its factorization.

12819961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852.

The product of its digits is 7776, while the sum is 37.

The square root of 12819961 is about 3580.4973118269. The cubic root of 12819961 is about 234.0429523997.

The spelling of 12819961 in words is "twelve million, eight hundred nineteen thousand, nine hundred sixty-one".