39874309 has 2 divisors, whose sum is σ = 39874310. Its totient is φ = 39874308.

The previous prime is 39874291. The next prime is 39874327. The reversal of 39874309 is 90347893.

It is a balanced prime because it is at equal distance from previous prime (39874291) and next prime (39874327).

It can be written as a sum of positive squares in only one way, i.e., 36180225 + 3694084 = 6015^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 39874309 - 2⁹ = 39873797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39874399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19937154 + 19937155.

It is an arithmetic number, because the mean of its divisors is an integer number (19937155).

Almost surely, 2^39874309 is an apocalyptic number.

It is an amenable number.

39874309 is a deficient number, since it is larger than the sum of its proper divisors (1).

39874309 is an equidigital number, since it uses as much as digits as its factorization.

39874309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 39874309 is about 6314.6107560166. The cubic root of 39874309 is about 341.6365991652.

The spelling of 39874309 in words is "thirty-nine million, eight hundred seventy-four thousand, three hundred nine".