12699877 has 2 divisors, whose sum is σ = 12699878. Its totient is φ = 12699876.

The previous prime is 12699857. The next prime is 12699899. The reversal of 12699877 is 77899621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8755681 + 3944196 = 2959^2 + 1986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12699877 - 2¹¹ = 12697829 is a prime.

It is a super-2 number, since 2×12699877² = 322573751630258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12699877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12699857) 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 as a sum of consecutive naturals, namely, 6349938 + 6349939.

It is an arithmetic number, because the mean of its divisors is an integer number (6349939).

Almost surely, 2^12699877 is an apocalyptic number.

It is an amenable number.

12699877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12699877 is an equidigital number, since it uses as much as digits as its factorization.

12699877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 12699877 is about 3563.6886788832. The cubic root of 12699877 is about 233.3099021823.

The spelling of 12699877 in words is "twelve million, six hundred ninety-nine thousand, eight hundred seventy-seven".