1190987 has 4 divisors (see below), whose sum is σ = 1361136. Its totient is φ = 1020840.

The previous prime is 1190983. The next prime is 1191011. The reversal of 1190987 is 7890911.

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

It is a cyclic number.

It is not a de Polignac number, because 1190987 - 2² = 1190983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1190983) 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, 85064 + ... + 85077.

It is an arithmetic number, because the mean of its divisors is an integer number (340284).

2^1190987 is an apocalyptic number.

1190987 is a deficient number, since it is larger than the sum of its proper divisors (170149).

1190987 is an equidigital number, since it uses as much as digits as its factorization.

1190987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170148.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1190987 is about 1091.3235084062. The cubic root of 1190987 is about 105.9991396631. Note that the first 3 decimals are identical.

The spelling of 1190987 in words is "one million, one hundred ninety thousand, nine hundred eighty-seven".