118989639 has 12 divisors (see below), whose sum is σ = 177801000. Its totient is φ = 76590864.

The previous prime is 118989631. The next prime is 118989641. The reversal of 118989639 is 936989811.

It is not a de Polignac number, because 118989639 - 2³ = 118989631 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118989631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227689 + ... + 228210.

It is an arithmetic number, because the mean of its divisors is an integer number (14816750).

Almost surely, 2^118989639 is an apocalyptic number.

118989639 is a deficient number, since it is larger than the sum of its proper divisors (58811361).

118989639 is a wasteful number, since it uses less digits than its factorization.

118989639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455934 (or 455931 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 118989639 is about 10908.2372086419. The cubic root of 118989639 is about 491.8541978236.

The spelling of 118989639 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, six hundred thirty-nine".