11395987 has 4 divisors (see below), whose sum is σ = 11540320. Its totient is φ = 11251656.

The previous prime is 11395981. The next prime is 11396009. The reversal of 11395987 is 78959311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11395987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11395981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72048 + ... + 72205.

It is an arithmetic number, because the mean of its divisors is an integer number (2885080).

Almost surely, 2^11395987 is an apocalyptic number.

11395987 is a deficient number, since it is larger than the sum of its proper divisors (144333).

11395987 is an equidigital number, since it uses as much as digits as its factorization.

11395987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144332.

The product of its digits is 68040, while the sum is 43.

The square root of 11395987 is about 3375.7942769073. The cubic root of 11395987 is about 225.0352998114.

It can be divided in two parts, 113 and 95987, that added together give a square (96100 = 310²).

The spelling of 11395987 in words is "eleven million, three hundred ninety-five thousand, nine hundred eighty-seven".