74324279 has 2 divisors, whose sum is σ = 74324280. Its totient is φ = 74324278.

The previous prime is 74324209. The next prime is 74324287. The reversal of 74324279 is 97242347.

It is a strong prime.

It is an emirp because it is prime and its reverse (97242347) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74324279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74324209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37162139 + 37162140.

It is an arithmetic number, because the mean of its divisors is an integer number (37162140).

Almost surely, 2^74324279 is an apocalyptic number.

74324279 is a deficient number, since it is larger than the sum of its proper divisors (1).

74324279 is an equidigital number, since it uses as much as digits as its factorization.

74324279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 38.

The square root of 74324279 is about 8621.1529971344. The cubic root of 74324279 is about 420.4460095736.

It can be divided in two parts, 7432 and 4279, that added together give a palindrome (11711).

The spelling of 74324279 in words is "seventy-four million, three hundred twenty-four thousand, two hundred seventy-nine".