12401887 has 2 divisors, whose sum is σ = 12401888. Its totient is φ = 12401886.

The previous prime is 12401867. The next prime is 12401903. The reversal of 12401887 is 78810421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12401887 - 2¹¹ = 12399839 is a prime.

It is a zygodrome in base 5.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12401827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200943 + 6200944.

It is an arithmetic number, because the mean of its divisors is an integer number (6200944).

Almost surely, 2^12401887 is an apocalyptic number.

12401887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401887 is an equidigital number, since it uses as much as digits as its factorization.

12401887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12401887 is about 3521.6312981344. The cubic root of 12401887 is about 231.4706457967.

The spelling of 12401887 in words is "twelve million, four hundred one thousand, eight hundred eighty-seven".