116951987 has 4 divisors (see below), whose sum is σ = 122036880. Its totient is φ = 111867096.

The previous prime is 116951929. The next prime is 116951999. The reversal of 116951987 is 789159611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789159611 = 7573 ⋅104207.

It is a cyclic number.

It is not a de Polignac number, because 116951987 - 2¹⁰ = 116950963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116951587) 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, 2542412 + ... + 2542457.

It is an arithmetic number, because the mean of its divisors is an integer number (30509220).

Almost surely, 2^116951987 is an apocalyptic number.

116951987 is a deficient number, since it is larger than the sum of its proper divisors (5084893).

116951987 is an equidigital number, since it uses as much as digits as its factorization.

116951987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084892.

The product of its digits is 136080, while the sum is 47.

The square root of 116951987 is about 10814.4341969425. The cubic root of 116951987 is about 489.0304122782.

The spelling of 116951987 in words is "one hundred sixteen million, nine hundred fifty-one thousand, nine hundred eighty-seven".