219306994 has 16 divisors (see below), whose sum is σ = 331224768. Its totient is φ = 108901872.

The previous prime is 219306959. The next prime is 219307037. The reversal of 219306994 is 499603912.

It is a self number, because there is not a number n which added to its sum of digits gives 219306994.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278269 + ... + 279055.

It is an arithmetic number, because the mean of its divisors is an integer number (20701548).

Almost surely, 2^219306994 is an apocalyptic number.

219306994 is a deficient number, since it is larger than the sum of its proper divisors (111917774).

219306994 is a wasteful number, since it uses less digits than its factorization.

219306994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 219306994 is about 14809.0173205382. The cubic root of 219306994 is about 603.0465363273.

The spelling of 219306994 in words is "two hundred nineteen million, three hundred six thousand, nine hundred ninety-four".