39343121 has 2 divisors, whose sum is σ = 39343122. Its totient is φ = 39343120.

The previous prime is 39343081. The next prime is 39343153. The reversal of 39343121 is 12134393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 17850625 = 4636^2 + 4225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39343121 is a prime.

It is not a weakly prime, because it can be changed into another prime (39343181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19671560 + 19671561.

It is an arithmetic number, because the mean of its divisors is an integer number (19671561).

Almost surely, 2^39343121 is an apocalyptic number.

It is an amenable number.

39343121 is a deficient number, since it is larger than the sum of its proper divisors (1).

39343121 is an equidigital number, since it uses as much as digits as its factorization.

39343121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 39343121 is about 6272.4095051264. The cubic root of 39343121 is about 340.1127682455.

The spelling of 39343121 in words is "thirty-nine million, three hundred forty-three thousand, one hundred twenty-one".