216900379 has 8 divisors (see below), whose sum is σ = 218972160. Its totient is φ = 214834536.

The previous prime is 216900377. The next prime is 216900407. The reversal of 216900379 is 973009612.

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 216900379 - 2¹ = 216900377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216900377) 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, 108612 + ... + 110590.

It is an arithmetic number, because the mean of its divisors is an integer number (27371520).

Almost surely, 2^216900379 is an apocalyptic number.

216900379 is a deficient number, since it is larger than the sum of its proper divisors (2071781).

216900379 is a wasteful number, since it uses less digits than its factorization.

216900379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 216900379 is about 14727.5381174180. The cubic root of 216900379 is about 600.8325285520.

The spelling of 216900379 in words is "two hundred sixteen million, nine hundred thousand, three hundred seventy-nine".