116971639 has 2 divisors, whose sum is σ = 116971640. Its totient is φ = 116971638.

The previous prime is 116971637. The next prime is 116971669. The reversal of 116971639 is 936179611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116971639 - 2¹ = 116971637 is a prime.

Together with 116971637, it forms a pair of twin primes.

It is equal to p_6678925 and since 116971639 and 6678925 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 116971595 and 116971604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116971633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58485819 + 58485820.

It is an arithmetic number, because the mean of its divisors is an integer number (58485820).

Almost surely, 2^116971639 is an apocalyptic number.

116971639 is a deficient number, since it is larger than the sum of its proper divisors (1).

116971639 is an equidigital number, since it uses as much as digits as its factorization.

116971639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 43.

The square root of 116971639 is about 10815.3427592472. The cubic root of 116971639 is about 489.0578021147.

The spelling of 116971639 in words is "one hundred sixteen million, nine hundred seventy-one thousand, six hundred thirty-nine".