219090941 has 8 divisors (see below), whose sum is σ = 221559000. Its totient is φ = 216636480.

The previous prime is 219090929. The next prime is 219090961. The reversal of 219090941 is 149090912.

It can be written as a sum of positive squares in 4 ways, for example, as 21576025 + 197514916 = 4645^2 + 14054^2 .

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 219090941 - 2²² = 214896637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219090961) 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, 30911 + ... + 37331.

It is an arithmetic number, because the mean of its divisors is an integer number (27694875).

Almost surely, 2^219090941 is an apocalyptic number.

It is an amenable number.

219090941 is a deficient number, since it is larger than the sum of its proper divisors (2468059).

219090941 is a wasteful number, since it uses less digits than its factorization.

219090941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 219090941 is about 14801.7208796815. The cubic root of 219090941 is about 602.8484383400.

The spelling of 219090941 in words is "two hundred nineteen million, ninety thousand, nine hundred forty-one".