116408639 has 16 divisors (see below), whose sum is σ = 128044800. Its totient is φ = 105337344.

The previous prime is 116408629. The next prime is 116408641. The reversal of 116408639 is 936804611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116408639 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 (116408629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191474 + ... + 192080.

It is an arithmetic number, because the mean of its divisors is an integer number (8002800).

Almost surely, 2^116408639 is an apocalyptic number.

116408639 is a deficient number, since it is larger than the sum of its proper divisors (11636161).

116408639 is a wasteful number, since it uses less digits than its factorization.

116408639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 116408639 is about 10789.2835257954. The cubic root of 116408639 is about 488.2719065520.

It can be divided in two parts, 1164086 and 39, that multiplied together give a palindrome (45399354).

The spelling of 116408639 in words is "one hundred sixteen million, four hundred eight thousand, six hundred thirty-nine".