219209941 has 8 divisors (see below), whose sum is σ = 234923904. Its totient is φ = 204011280.

The previous prime is 219209933. The next prime is 219209953. The reversal of 219209941 is 149902912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 219209941 - 2³ = 219209933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 219209941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219209971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127945 + ... + 129646.

It is an arithmetic number, because the mean of its divisors is an integer number (29365488).

Almost surely, 2^219209941 is an apocalyptic number.

It is an amenable number.

219209941 is a deficient number, since it is larger than the sum of its proper divisors (15713963).

219209941 is a wasteful number, since it uses less digits than its factorization.

219209941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257651.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 219209941 is about 14805.7401368523. The cubic root of 219209941 is about 602.9575649874.

The spelling of 219209941 in words is "two hundred nineteen million, two hundred nine thousand, nine hundred forty-one".