1134139987 has 4 divisors (see below), whose sum is σ = 1135222200. Its totient is φ = 1133057776.

The previous prime is 1134139961. The next prime is 1134140071. The reversal of 1134139987 is 7899314311.

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-1134139987 is a prime.

It is a super-2 number, since 2×1134139987² = 2572547020224720338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1134139907) 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, 539533 + ... + 541630.

It is an arithmetic number, because the mean of its divisors is an integer number (283805550).

Almost surely, 2^1134139987 is an apocalyptic number.

1134139987 is a deficient number, since it is larger than the sum of its proper divisors (1082213).

1134139987 is a wasteful number, since it uses less digits than its factorization.

1134139987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082212.

The product of its digits is 163296, while the sum is 46.

The square root of 1134139987 is about 33676.9949223502. The cubic root of 1134139987 is about 1042.8509016247.

The spelling of 1134139987 in words is "one billion, one hundred thirty-four million, one hundred thirty-nine thousand, nine hundred eighty-seven".