118521479 has 4 divisors (see below), whose sum is σ = 118609176. Its totient is φ = 118433784.

The previous prime is 118521457. The next prime is 118521497. The reversal of 118521479 is 974125811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118521479 - 2²⁰ = 117472903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118521499) 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, 41789 + ... + 44534.

It is an arithmetic number, because the mean of its divisors is an integer number (29652294).

Almost surely, 2^118521479 is an apocalyptic number.

118521479 is a deficient number, since it is larger than the sum of its proper divisors (87697).

118521479 is an equidigital number, since it uses as much as digits as its factorization.

118521479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87696.

The product of its digits is 20160, while the sum is 38.

The square root of 118521479 is about 10886.7570469814. The cubic root of 118521479 is about 491.2082897248.

It can be divided in two parts, 11852 and 1479, that added together give a palindrome (13331).

The spelling of 118521479 in words is "one hundred eighteen million, five hundred twenty-one thousand, four hundred seventy-nine".