179972479 has 4 divisors (see below), whose sum is σ = 183022920. Its totient is φ = 176922040.

The previous prime is 179972473. The next prime is 179972483. The reversal of 179972479 is 974279971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974279971 = 7 ⋅139182853.

It is a cyclic number.

It is not a de Polignac number, because 179972479 - 2¹¹ = 179970431 is a prime.

It is a super-3 number, since 3×179972479³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (179972473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525132 + ... + 1525249.

It is an arithmetic number, because the mean of its divisors is an integer number (45755730).

Almost surely, 2^179972479 is an apocalyptic number.

179972479 is a deficient number, since it is larger than the sum of its proper divisors (3050441).

179972479 is an equidigital number, since it uses as much as digits as its factorization.

179972479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050440.

The product of its digits is 2000376, while the sum is 55.

The square root of 179972479 is about 13415.3821786783. The cubic root of 179972479 is about 564.5928400258.

The spelling of 179972479 in words is "one hundred seventy-nine million, nine hundred seventy-two thousand, four hundred seventy-nine".