216289097 has 8 divisors (see below), whose sum is σ = 221802240. Its totient is φ = 210798000.

The previous prime is 216289093. The next prime is 216289109. The reversal of 216289097 is 790982612.

It is a happy number.

216289097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 216289097 - 2² = 216289093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216289091) 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, 15347 + ... + 25847.

It is an arithmetic number, because the mean of its divisors is an integer number (27725280).

Almost surely, 2^216289097 is an apocalyptic number.

It is an amenable number.

216289097 is a deficient number, since it is larger than the sum of its proper divisors (5513143).

216289097 is a wasteful number, since it uses less digits than its factorization.

216289097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11023.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 216289097 is about 14706.7704476544. The cubic root of 216289097 is about 600.2675630730.

The spelling of 216289097 in words is "two hundred sixteen million, two hundred eighty-nine thousand, ninety-seven".