84723219 has 32 divisors (see below), whose sum is σ = 144752640. Its totient is φ = 47972736.

The previous prime is 84723209. The next prime is 84723251. The reversal of 84723219 is 91232748.

It is not a de Polignac number, because 84723219 - 2¹² = 84719123 is a prime.

It is a super-2 number, since 2×84723219² = 14356047675443922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84723209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19374 + ... + 23340.

It is an arithmetic number, because the mean of its divisors is an integer number (4523520).

Almost surely, 2^84723219 is an apocalyptic number.

84723219 is a deficient number, since it is larger than the sum of its proper divisors (60029421).

84723219 is a wasteful number, since it uses less digits than its factorization.

84723219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096 (or 4090 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 84723219 is about 9204.5216605753. The cubic root of 84723219 is about 439.2052094846.

The spelling of 84723219 in words is "eighty-four million, seven hundred twenty-three thousand, two hundred nineteen".