118239749 has 2 divisors, whose sum is σ = 118239750. Its totient is φ = 118239748.

The previous prime is 118239659. The next prime is 118239769. The reversal of 118239749 is 947932811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84309124 + 33930625 = 9182^2 + 5825^2 .

It is a cyclic number.

It is not a de Polignac number, because 118239749 - 2¹² = 118235653 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118239769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59119874 + 59119875.

It is an arithmetic number, because the mean of its divisors is an integer number (59119875).

Almost surely, 2^118239749 is an apocalyptic number.

It is an amenable number.

118239749 is a deficient number, since it is larger than the sum of its proper divisors (1).

118239749 is an equidigital number, since it uses as much as digits as its factorization.

118239749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 118239749 is about 10873.8102337681. The cubic root of 118239749 is about 490.8187740890.

The spelling of 118239749 in words is "one hundred eighteen million, two hundred thirty-nine thousand, seven hundred forty-nine".