216177339 has 16 divisors (see below), whose sum is σ = 340773120. Its totient is φ = 119269920.

The previous prime is 216177337. The next prime is 216177361. The reversal of 216177339 is 933771612.

It is a happy number.

It is not a de Polignac number, because 216177339 - 2¹ = 216177337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216177297 and 216177306.

It is not an unprimeable number, because it can be changed into a prime (216177331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176877 + ... + 178094.

It is an arithmetic number, because the mean of its divisors is an integer number (21298320).

Almost surely, 2^216177339 is an apocalyptic number.

216177339 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

216177339 is a deficient number, since it is larger than the sum of its proper divisors (124595781).

216177339 is a wasteful number, since it uses less digits than its factorization.

216177339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355010.

The product of its digits is 47628, while the sum is 39.

The square root of 216177339 is about 14702.9704141714. The cubic root of 216177339 is about 600.1641578607.

The spelling of 216177339 in words is "two hundred sixteen million, one hundred seventy-seven thousand, three hundred thirty-nine".