1219887 has 8 divisors (see below), whose sum is σ = 1807280. Its totient is φ = 813240.

The previous prime is 1219879. The next prime is 1219891. The reversal of 1219887 is 7889121.

It is not a de Polignac number, because 1219887 - 2³ = 1219879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22564 + ... + 22617.

It is an arithmetic number, because the mean of its divisors is an integer number (225910).

2^1219887 is an apocalyptic number.

1219887 is a deficient number, since it is larger than the sum of its proper divisors (587393).

1219887 is an equidigital number, since it uses as much as digits as its factorization.

1219887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45190 (or 45184 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 1219887 is about 1104.4849478377. The cubic root of 1219887 is about 106.8496739005.

The spelling of 1219887 in words is "one million, two hundred nineteen thousand, eight hundred eighty-seven".