1293887 has 16 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 1023360.

The previous prime is 1293869. The next prime is 1293899. The reversal of 1293887 is 7883921.

It is a cyclic number.

It is not a de Polignac number, because 1293887 - 2¹⁶ = 1228351 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1293887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293857) 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, 9812 + ... + 9942.

It is an arithmetic number, because the mean of its divisors is an integer number (99792).

2^1293887 is an apocalyptic number.

1293887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1293887 is a deficient number, since it is larger than the sum of its proper divisors (302785).

1293887 is a wasteful number, since it uses less digits than its factorization.

1293887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238.

The product of its digits is 24192, while the sum is 38.

The square root of 1293887 is about 1137.4915384301. The cubic root of 1293887 is about 108.9679506257.

The spelling of 1293887 in words is "one million, two hundred ninety-three thousand, eight hundred eighty-seven".