220916839 has 12 divisors (see below), whose sum is σ = 261506728. Its totient is φ = 185383440.

The previous prime is 220916797. The next prime is 220916911. The reversal of 220916839 is 938619022.

It is a happy number.

It is not a de Polignac number, because 220916839 - 2⁷ = 220916711 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 (220916539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68649 + ... + 71794.

Almost surely, 2^220916839 is an apocalyptic number.

220916839 is a deficient number, since it is larger than the sum of its proper divisors (40589889).

220916839 is a wasteful number, since it uses less digits than its factorization.

220916839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140478 (or 140467 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 220916839 is about 14863.2714770336. The cubic root of 220916839 is about 604.5185149868.

The spelling of 220916839 in words is "two hundred twenty million, nine hundred sixteen thousand, eight hundred thirty-nine".