74434309 has 2 divisors, whose sum is σ = 74434310. Its totient is φ = 74434308.

The previous prime is 74434303. The next prime is 74434351. The reversal of 74434309 is 90343447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46376100 + 28058209 = 6810^2 + 5297^2 .

It is a cyclic number.

It is not a de Polignac number, because 74434309 - 2⁵ = 74434277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74434303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37217154 + 37217155.

It is an arithmetic number, because the mean of its divisors is an integer number (37217155).

Almost surely, 2^74434309 is an apocalyptic number.

It is an amenable number.

74434309 is a deficient number, since it is larger than the sum of its proper divisors (1).

74434309 is an equidigital number, since it uses as much as digits as its factorization.

74434309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 74434309 is about 8627.5320341335. The cubic root of 74434309 is about 420.6533840016.

It can be divided in two parts, 744 and 34309, that added together give a palindrome (35053).

The spelling of 74434309 in words is "seventy-four million, four hundred thirty-four thousand, three hundred nine".