12783401 has 2 divisors, whose sum is σ = 12783402. Its totient is φ = 12783400.

The previous prime is 12783383. The next prime is 12783451. The reversal of 12783401 is 10438721.

12783401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 811801 = 3460^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 12783401 - 2¹⁰ = 12782377 is a prime.

It is a super-2 number, since 2×12783401² = 326830682253602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12783451) 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, 6391700 + 6391701.

It is an arithmetic number, because the mean of its divisors is an integer number (6391701).

Almost surely, 2^12783401 is an apocalyptic number.

It is an amenable number.

12783401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12783401 is an equidigital number, since it uses as much as digits as its factorization.

12783401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12783401 is about 3575.3882306681. The cubic root of 12783401 is about 233.8202591281.

The spelling of 12783401 in words is "twelve million, seven hundred eighty-three thousand, four hundred one".