118940609 has 4 divisors (see below), whose sum is σ = 118962480. Its totient is φ = 118918740.

The previous prime is 118940599. The next prime is 118940621. The reversal of 118940609 is 906049811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 118940609 - 2⁴ = 118940593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118940699) 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, 4274 + ... + 16004.

It is an arithmetic number, because the mean of its divisors is an integer number (29740620).

Almost surely, 2^118940609 is an apocalyptic number.

It is an amenable number.

118940609 is a deficient number, since it is larger than the sum of its proper divisors (21871).

118940609 is a wasteful number, since it uses less digits than its factorization.

118940609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21870.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 118940609 is about 10905.9895928797. The cubic root of 118940609 is about 491.7866319285.

The spelling of 118940609 in words is "one hundred eighteen million, nine hundred forty thousand, six hundred nine".