2119987 has 8 divisors (see below), whose sum is σ = 2247840. Its totient is φ = 1995840.

The previous prime is 2119969. The next prime is 2120009. The reversal of 2119987 is 7899112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2119987 - 2¹⁵ = 2087219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2119907) 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, 298 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (280980).

2^2119987 is an apocalyptic number.

2119987 is the 1189-th pentagonal number.

2119987 is a deficient number, since it is larger than the sum of its proper divisors (127853).

2119987 is a wasteful number, since it uses less digits than its factorization.

2119987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853.

The product of its digits is 9072, while the sum is 37.

The square root of 2119987 is about 1456.0175136309. The cubic root of 2119987 is about 128.4629031888.

The spelling of 2119987 in words is "two million, one hundred nineteen thousand, nine hundred eighty-seven".