118909839 has 16 divisors (see below), whose sum is σ = 168249600. Its totient is φ = 74538816.

The previous prime is 118909829. The next prime is 118909871. The reversal of 118909839 is 938909811.

It is not a de Polignac number, because 118909839 - 2⁵ = 118909807 is a prime.

It is a super-2 number, since 2×118909839² = 28279099622011842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118909829) 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, 10534 + ... + 18675.

It is an arithmetic number, because the mean of its divisors is an integer number (10515600).

Almost surely, 2^118909839 is an apocalyptic number.

118909839 is a deficient number, since it is larger than the sum of its proper divisors (49339761).

118909839 is a wasteful number, since it uses less digits than its factorization.

118909839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29294.

The product of its (nonzero) digits is 139968, while the sum is 48.

The square root of 118909839 is about 10904.5788089224. The cubic root of 118909839 is about 491.7442197816.

The spelling of 118909839 in words is "one hundred eighteen million, nine hundred nine thousand, eight hundred thirty-nine".