72219319 has 2 divisors, whose sum is σ = 72219320. Its totient is φ = 72219318.

The previous prime is 72219311. The next prime is 72219353. The reversal of 72219319 is 91391227.

It is a happy number.

It is an a-pointer prime, because the next prime (72219353) can be obtained adding 72219319 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72219319 - 2³ = 72219311 is a prime.

It is a super-2 number, since 2×72219319² = 10431260073647522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72219311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36109659 + 36109660.

It is an arithmetic number, because the mean of its divisors is an integer number (36109660).

Almost surely, 2^72219319 is an apocalyptic number.

72219319 is a deficient number, since it is larger than the sum of its proper divisors (1).

72219319 is an equidigital number, since it uses as much as digits as its factorization.

72219319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 72219319 is about 8498.1950436549. The cubic root of 72219319 is about 416.4387456053.

The spelling of 72219319 in words is "seventy-two million, two hundred nineteen thousand, three hundred nineteen".