74212219 has 2 divisors, whose sum is σ = 74212220. Its totient is φ = 74212218.

The previous prime is 74212213. The next prime is 74212223. The reversal of 74212219 is 91221247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74212219 - 2³ = 74212211 is a prime.

It is a super-2 number, since 2×74212219² = 11014906897807922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74212211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37106109 + 37106110.

It is an arithmetic number, because the mean of its divisors is an integer number (37106110).

Almost surely, 2^74212219 is an apocalyptic number.

74212219 is a deficient number, since it is larger than the sum of its proper divisors (1).

74212219 is an equidigital number, since it uses as much as digits as its factorization.

74212219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 74212219 is about 8614.6514148862. The cubic root of 74212219 is about 420.2345987170.

Subtracting 74212219 from its reverse (91221247), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 74212219 in words is "seventy-four million, two hundred twelve thousand, two hundred nineteen".