179909972 has 12 divisors (see below), whose sum is σ = 343464576. Its totient is φ = 81777240.

The previous prime is 179909971. The next prime is 179909981. The reversal of 179909972 is 279909971.

179909972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (179909971) 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, 2044388 + ... + 2044475.

It is an arithmetic number, because the mean of its divisors is an integer number (28622048).

Almost surely, 2^179909972 is an apocalyptic number.

It is an amenable number.

179909972 is a deficient number, since it is larger than the sum of its proper divisors (163554604).

179909972 is a wasteful number, since it uses less digits than its factorization.

179909972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088878 (or 4088876 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 53.

The square root of 179909972 is about 13413.0522999055. The cubic root of 179909972 is about 564.5274687510.

Subtracting 179909972 from its reverse (279909971), we obtain a palindrome (99999999).

The spelling of 179909972 in words is "one hundred seventy-nine million, nine hundred nine thousand, nine hundred seventy-two".