1113987 has 8 divisors (see below), whose sum is σ = 1697536. Its totient is φ = 636552.

The previous prime is 1113971. The next prime is 1113991. The reversal of 1113987 is 7893111.

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

It is not a de Polignac number, because 1113987 - 2⁴ = 1113971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113997) 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, 26503 + ... + 26544.

It is an arithmetic number, because the mean of its divisors is an integer number (212192).

2^1113987 is an apocalyptic number.

1113987 is a deficient number, since it is larger than the sum of its proper divisors (583549).

1113987 is an equidigital number, since it uses as much as digits as its factorization.

1113987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53057.

The product of its digits is 1512, while the sum is 30.

The square root of 1113987 is about 1055.4558256981. The cubic root of 1113987 is about 103.6637004329.

The spelling of 1113987 in words is "one million, one hundred thirteen thousand, nine hundred eighty-seven".