118439739 has 20 divisors (see below), whose sum is σ = 193014360. Its totient is φ = 71781120.

The previous prime is 118439729. The next prime is 118439743. The reversal of 118439739 is 937934811.

It is not a de Polignac number, because 118439739 - 2⁹ = 118439227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118439694 and 118439703.

It is not an unprimeable number, because it can be changed into a prime (118439729) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65574 + ... + 67355.

It is an arithmetic number, because the mean of its divisors is an integer number (9650718).

Almost surely, 2^118439739 is an apocalyptic number.

118439739 is a deficient number, since it is larger than the sum of its proper divisors (74574621).

118439739 is a wasteful number, since it uses less digits than its factorization.

118439739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132952 (or 132943 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 118439739 is about 10883.0022971605. The cubic root of 118439739 is about 491.0953408602.

The spelling of 118439739 in words is "one hundred eighteen million, four hundred thirty-nine thousand, seven hundred thirty-nine".