47002729 has 4 divisors (see below), whose sum is σ = 47646676. Its totient is φ = 46358784.

The previous prime is 47002723. The next prime is 47002733. The reversal of 47002729 is 92720074.

It is a happy number.

47002729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15586704 + 31416025 = 3948^2 + 5605^2 .

It is a cyclic number.

It is not a de Polignac number, because 47002729 - 2⁷ = 47002601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47002729.

It is not an unprimeable number, because it can be changed into a prime (47002723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321864 + ... + 322009.

It is an arithmetic number, because the mean of its divisors is an integer number (11911669).

Almost surely, 2^47002729 is an apocalyptic number.

It is an amenable number.

47002729 is a deficient number, since it is larger than the sum of its proper divisors (643947).

47002729 is an equidigital number, since it uses as much as digits as its factorization.

47002729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643946.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 47002729 is about 6855.8536302929. The cubic root of 47002729 is about 360.8895926208.

The spelling of 47002729 in words is "forty-seven million, two thousand, seven hundred twenty-nine".