219972973 has 16 divisors (see below), whose sum is σ = 243093312. Its totient is φ = 197392000.

The previous prime is 219972953. The next prime is 219972983. The reversal of 219972973 is 379279912.

219972973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 219972973 - 2⁹ = 219972461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219972953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421953 + ... + 422473.

It is an arithmetic number, because the mean of its divisors is an integer number (15193332).

Almost surely, 2^219972973 is an apocalyptic number.

It is an amenable number.

219972973 is a deficient number, since it is larger than the sum of its proper divisors (23120339).

219972973 is a wasteful number, since it uses less digits than its factorization.

219972973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956.

The product of its digits is 428652, while the sum is 49.

The square root of 219972973 is about 14831.4858662239. The cubic root of 219972973 is about 603.6563519274.

The spelling of 219972973 in words is "two hundred nineteen million, nine hundred seventy-two thousand, nine hundred seventy-three".