36147979 has 4 divisors (see below), whose sum is σ = 41311984. Its totient is φ = 30983976.

The previous prime is 36147977. The next prime is 36147983. The reversal of 36147979 is 97974163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97974163 = 7 ⋅13996309.

It is a cyclic number.

It is not a de Polignac number, because 36147979 - 2¹ = 36147977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36147971) 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, 2581992 + ... + 2582005.

It is an arithmetic number, because the mean of its divisors is an integer number (10327996).

Almost surely, 2^36147979 is an apocalyptic number.

36147979 is a deficient number, since it is larger than the sum of its proper divisors (5164005).

36147979 is an equidigital number, since it uses as much as digits as its factorization.

36147979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164004.

The product of its digits is 285768, while the sum is 46.

The square root of 36147979 is about 6012.3189369826. The cubic root of 36147979 is about 330.6445285259.

The spelling of 36147979 in words is "thirty-six million, one hundred forty-seven thousand, nine hundred seventy-nine".