118779949 has 4 divisors (see below), whose sum is σ = 118924060. Its totient is φ = 118635840.

The previous prime is 118779839. The next prime is 118779961. The reversal of 118779949 is 949977811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949977811 = 10169 ⋅93419.

It can be written as a sum of positive squares in 2 ways, for example, as 72131049 + 46648900 = 8493^2 + 6830^2 .

It is a cyclic number.

It is not a de Polignac number, because 118779949 - 2⁷ = 118779821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118779949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118779049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70812 + ... + 72469.

It is an arithmetic number, because the mean of its divisors is an integer number (29731015).

Almost surely, 2^118779949 is an apocalyptic number.

It is an amenable number.

118779949 is a deficient number, since it is larger than the sum of its proper divisors (144111).

118779949 is an equidigital number, since it uses as much as digits as its factorization.

118779949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144110.

The product of its digits is 1143072, while the sum is 55.

The square root of 118779949 is about 10898.6214265842. The cubic root of 118779949 is about 491.5651038837.

The spelling of 118779949 in words is "one hundred eighteen million, seven hundred seventy-nine thousand, nine hundred forty-nine".