216040299 has 16 divisors (see below), whose sum is σ = 302725632. Its totient is φ = 136872288.

The previous prime is 216040277. The next prime is 216040339. The reversal of 216040299 is 992040612.

It is not a de Polignac number, because 216040299 - 2¹⁶ = 215974763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216040229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17859 + ... + 27404.

It is an arithmetic number, because the mean of its divisors is an integer number (18920352).

Almost surely, 2^216040299 is an apocalyptic number.

216040299 is a deficient number, since it is larger than the sum of its proper divisors (86685333).

216040299 is a wasteful number, since it uses less digits than its factorization.

216040299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45346.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 216040299 is about 14698.3093925798. The cubic root of 216040299 is about 600.0373115686.

The spelling of 216040299 in words is "two hundred sixteen million, forty thousand, two hundred ninety-nine".