4723219850209 has 45 divisors (see below), whose sum is σ = 5855528977337. Its totient is φ = 3808868163072.

The previous prime is 4723219850143. The next prime is 4723219850213. The reversal of 4723219850209 is 9020589123274.

It is a happy number.

The square root of 4723219850209 is 2173297.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 351239949025 + 4371979901184 = 592655^2 + 2090928^2 .

It is not a de Polignac number, because 4723219850209 - 2¹⁷ = 4723219719137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4723219851209) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1810355097 + ... + 1810357705.

Almost surely, 2^{4723219850209} is an apocalyptic number.

4723219850209 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4723219850209 is the 2173297-th square number.

4723219850209 is the 1086649-th centered octagonal number.

It is an amenable number.

4723219850209 is a deficient number, since it is larger than the sum of its proper divisors (1132309127128).

4723219850209 is an frugal number, since it uses more digits than its factorization.

4723219850209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 4723219850209 in words is "four trillion, seven hundred twenty-three billion, two hundred nineteen million, eight hundred fifty thousand, two hundred nine".