138409116 has 12 divisors (see below), whose sum is σ = 322954632. Its totient is φ = 46136368.

The previous prime is 138409097. The next prime is 138409157. The reversal of 138409116 is 611904831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5767035 + ... + 5767058.

It is an arithmetic number, because the mean of its divisors is an integer number (26912886).

Almost surely, 2^138409116 is an apocalyptic number.

It is an amenable number.

138409116 is an abundant number, since it is smaller than the sum of its proper divisors (184545516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138409116 is a wasteful number, since it uses less digits than its factorization.

138409116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11534100 (or 11534098 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 138409116 is about 11764.7403711259. The cubic root of 138409116 is about 517.2750900187.

The spelling of 138409116 in words is "one hundred thirty-eight million, four hundred nine thousand, one hundred sixteen".