74079209 has 2 divisors, whose sum is σ = 74079210. Its totient is φ = 74079208.

The previous prime is 74079197. The next prime is 74079221. The reversal of 74079209 is 90297047.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (74079197) and next prime (74079221).

It can be written as a sum of positive squares in only one way, i.e., 74011609 + 67600 = 8603^2 + 260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74079209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74079259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37039604 + 37039605.

It is an arithmetic number, because the mean of its divisors is an integer number (37039605).

Almost surely, 2^74079209 is an apocalyptic number.

It is an amenable number.

74079209 is a deficient number, since it is larger than the sum of its proper divisors (1).

74079209 is an equidigital number, since it uses as much as digits as its factorization.

74079209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 74079209 is about 8606.9279653079. The cubic root of 74079209 is about 419.9833874760.

The spelling of 74079209 in words is "seventy-four million, seventy-nine thousand, two hundred nine".