70729339 has 2 divisors, whose sum is σ = 70729340. Its totient is φ = 70729338.

The previous prime is 70729331. The next prime is 70729409. The reversal of 70729339 is 93392707.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70729339 - 2³ = 70729331 is a prime.

It is not a weakly prime, because it can be changed into another prime (70729331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35364669 + 35364670.

It is an arithmetic number, because the mean of its divisors is an integer number (35364670).

Almost surely, 2^70729339 is an apocalyptic number.

70729339 is a deficient number, since it is larger than the sum of its proper divisors (1).

70729339 is an equidigital number, since it uses as much as digits as its factorization.

70729339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 70729339 is about 8410.0736619842. The cubic root of 70729339 is about 413.5549274992.

The spelling of 70729339 in words is "seventy million, seven hundred twenty-nine thousand, three hundred thirty-nine".