116215639 has 4 divisors (see below), whose sum is σ = 116956024. Its totient is φ = 115475256.

The previous prime is 116215637. The next prime is 116215643. The reversal of 116215639 is 936512611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936512611 = 41 ⋅22841771.

It is a cyclic number.

It is not a de Polignac number, because 116215639 - 2¹ = 116215637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116215637) 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, 369957 + ... + 370270.

It is an arithmetic number, because the mean of its divisors is an integer number (29239006).

Almost surely, 2^116215639 is an apocalyptic number.

116215639 is a deficient number, since it is larger than the sum of its proper divisors (740385).

116215639 is an equidigital number, since it uses as much as digits as its factorization.

116215639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740384.

The product of its digits is 9720, while the sum is 34.

The square root of 116215639 is about 10780.3357554392. The cubic root of 116215639 is about 488.0019134006.

The spelling of 116215639 in words is "one hundred sixteen million, two hundred fifteen thousand, six hundred thirty-nine".