219890097 has 96 divisors (see below), whose sum is σ = 409344000. Its totient is φ = 113164128.

The previous prime is 219890071. The next prime is 219890113. The reversal of 219890097 is 790098912.

It is not a de Polignac number, because 219890097 - 2¹¹ = 219888049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219891097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1348938 + ... + 1349100.

It is an arithmetic number, because the mean of its divisors is an integer number (4264000).

Almost surely, 2^219890097 is an apocalyptic number.

It is an amenable number.

219890097 is a deficient number, since it is larger than the sum of its proper divisors (189453903).

219890097 is a wasteful number, since it uses less digits than its factorization.

219890097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 219890097 is about 14828.6916820062. The cubic root of 219890097 is about 603.5805321463.

The spelling of 219890097 in words is "two hundred nineteen million, eight hundred ninety thousand, ninety-seven".