74212399 has 2 divisors, whose sum is σ = 74212400. Its totient is φ = 74212398.

The previous prime is 74212373. The next prime is 74212403. The reversal of 74212399 is 99321247.

It is a strong prime.

It is an emirp because it is prime and its reverse (99321247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74212399 - 2¹⁷ = 74081327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74212319) 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 as a sum of consecutive naturals, namely, 37106199 + 37106200.

It is an arithmetic number, because the mean of its divisors is an integer number (37106200).

Almost surely, 2^74212399 is an apocalyptic number.

74212399 is a deficient number, since it is larger than the sum of its proper divisors (1).

74212399 is an equidigital number, since it uses as much as digits as its factorization.

74212399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 74212399 is about 8614.6618621975. The cubic root of 74212399 is about 420.2349384731.

The spelling of 74212399 in words is "seventy-four million, two hundred twelve thousand, three hundred ninety-nine".