329729047 has 2 divisors, whose sum is σ = 329729048. Its totient is φ = 329729046.

The previous prime is 329728981. The next prime is 329729123. The reversal of 329729047 is 740927923.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-329729047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 329728994 and 329729012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (329729747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164864523 + 164864524.

It is an arithmetic number, because the mean of its divisors is an integer number (164864524).

Almost surely, 2^329729047 is an apocalyptic number.

329729047 is a deficient number, since it is larger than the sum of its proper divisors (1).

329729047 is an equidigital number, since it uses as much as digits as its factorization.

329729047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 329729047 is about 18158.4428572496. The cubic root of 329729047 is about 690.8531399106.

The spelling of 329729047 in words is "three hundred twenty-nine million, seven hundred twenty-nine thousand, forty-seven".