216719039 has 2 divisors, whose sum is σ = 216719040. Its totient is φ = 216719038.

The previous prime is 216719029. The next prime is 216719081. The reversal of 216719039 is 930917612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216719039 - 2⁸ = 216718783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216718993 and 216719011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216719029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108359519 + 108359520.

It is an arithmetic number, because the mean of its divisors is an integer number (108359520).

Almost surely, 2^216719039 is an apocalyptic number.

216719039 is a deficient number, since it is larger than the sum of its proper divisors (1).

216719039 is an equidigital number, since it uses as much as digits as its factorization.

216719039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 216719039 is about 14721.3803360962. The cubic root of 216719039 is about 600.6650394504.

The spelling of 216719039 in words is "two hundred sixteen million, seven hundred nineteen thousand, thirty-nine".