12699841 has 32 divisors (see below), whose sum is σ = 16920576. Its totient is φ = 9240000.

The previous prime is 12699839. The next prime is 12699851. The reversal of 12699841 is 14899621.

12699841 = 15² + 16² + ... + 336².

It is not a de Polignac number, because 12699841 - 2¹ = 12699839 is a prime.

It is a super-2 number, since 2×12699841² = 322571922850562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12699794 and 12699803.

It is not an unprimeable number, because it can be changed into a prime (12699811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125691 + ... + 125791.

It is an arithmetic number, because the mean of its divisors is an integer number (528768).

Almost surely, 2^12699841 is an apocalyptic number.

12699841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12699841 is a deficient number, since it is larger than the sum of its proper divisors (4220735).

12699841 is a wasteful number, since it uses less digits than its factorization.

12699841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213.

The product of its digits is 31104, while the sum is 40.

The square root of 12699841 is about 3563.6836279333. The cubic root of 12699841 is about 233.3096817296.

The spelling of 12699841 in words is "twelve million, six hundred ninety-nine thousand, eight hundred forty-one".