1112999987 has 6 divisors (see below), whose sum is σ = 1223380284. Its totient is φ = 1011818060.

The previous prime is 1112999977. The next prime is 1112999989. The reversal of 1112999987 is 7899992111.

It is not a de Polignac number, because 1112999987 - 2⁴ = 1112999971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112999989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4599053 + ... + 4599294.

It is an arithmetic number, because the mean of its divisors is an integer number (203896714).

Almost surely, 2^1112999987 is an apocalyptic number.

1112999987 is a deficient number, since it is larger than the sum of its proper divisors (110380297).

1112999987 is an equidigital number, since it uses as much as digits as its factorization.

1112999987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198369 (or 9198358 counting only the distinct ones).

The product of its digits is 734832, while the sum is 56.

The square root of 1112999987 is about 33361.6544403901. The cubic root of 1112999987 is about 1036.3307540368.

The spelling of 1112999987 in words is "one billion, one hundred twelve million, nine hundred ninety-nine thousand, nine hundred eighty-seven".