216479494 has 32 divisors (see below), whose sum is σ = 406022400. Its totient is φ = 84097440.

The previous prime is 216479491. The next prime is 216479531. The reversal of 216479494 is 494974612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216479491) 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, 56512 + ... + 60220.

It is an arithmetic number, because the mean of its divisors is an integer number (12688200).

Almost surely, 2^216479494 is an apocalyptic number.

216479494 is a deficient number, since it is larger than the sum of its proper divisors (189542906).

216479494 is a wasteful number, since it uses less digits than its factorization.

216479494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108.

The product of its digits is 435456, while the sum is 46.

The square root of 216479494 is about 14713.2421308154. The cubic root of 216479494 is about 600.4436478061.

It can be divided in two parts, 216 and 479494, that added together give a triangular number (479710 = T₉₇₉).

The spelling of 216479494 in words is "two hundred sixteen million, four hundred seventy-nine thousand, four hundred ninety-four".