11141987 has 8 divisors (see below), whose sum is σ = 11827296. Its totient is φ = 10460032.

The previous prime is 11141983. The next prime is 11142011. The reversal of 11141987 is 78914111.

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

It is not a de Polignac number, because 11141987 - 2² = 11141983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11141981) 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, 10493 + ... + 11505.

It is an arithmetic number, because the mean of its divisors is an integer number (1478412).

Almost surely, 2^11141987 is an apocalyptic number.

11141987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11141987 is a deficient number, since it is larger than the sum of its proper divisors (685309).

11141987 is a wasteful number, since it uses less digits than its factorization.

11141987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677.

The product of its digits is 2016, while the sum is 32.

The square root of 11141987 is about 3337.9615036726. The cubic root of 11141987 is about 223.3508189077.

The spelling of 11141987 in words is "eleven million, one hundred forty-one thousand, nine hundred eighty-seven".