219039172 has 12 divisors (see below), whose sum is σ = 418165776. Its totient is φ = 99563240.

The previous prime is 219039167. The next prime is 219039173. The reversal of 219039172 is 271930912.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (219039173) 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, 2489038 + ... + 2489125.

It is an arithmetic number, because the mean of its divisors is an integer number (34847148).

Almost surely, 2^219039172 is an apocalyptic number.

219039172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

219039172 is a deficient number, since it is larger than the sum of its proper divisors (199126604).

219039172 is a wasteful number, since it uses less digits than its factorization.

219039172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978178 (or 4978176 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 219039172 is about 14799.9720270006. The cubic root of 219039172 is about 602.8009522457.

The spelling of 219039172 in words is "two hundred nineteen million, thirty-nine thousand, one hundred seventy-two".