219812047 has 16 divisors (see below), whose sum is σ = 272157760. Its totient is φ = 173905056.

The previous prime is 219812027. The next prime is 219812051. The reversal of 219812047 is 740218912.

It is not a de Polignac number, because 219812047 - 2²⁷ = 85594319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219812027) 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, 8233 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (17009860).

Almost surely, 2^219812047 is an apocalyptic number.

219812047 is a deficient number, since it is larger than the sum of its proper divisors (52345713).

219812047 is an equidigital number, since it uses as much as digits as its factorization.

219812047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14339 (or 14313 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 219812047 is about 14826.0597260364. The cubic root of 219812047 is about 603.5091100494.

The spelling of 219812047 in words is "two hundred nineteen million, eight hundred twelve thousand, forty-seven".