2047729 has 2 divisors, whose sum is σ = 2047730. Its totient is φ = 2047728.

The previous prime is 2047699. The next prime is 2047733. The reversal of 2047729 is 9277402.

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., 2016400 + 31329 = 1420^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 2047729 - 2⁹ = 2047217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2047729.

It is not a weakly prime, because it can be changed into another prime (2041729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023864 + 1023865.

It is an arithmetic number, because the mean of its divisors is an integer number (1023865).

2^2047729 is an apocalyptic number.

It is an amenable number.

2047729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047729 is an equidigital number, since it uses as much as digits as its factorization.

2047729 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2047729 is about 1430.9888189640. The cubic root of 2047729 is about 126.9864825343.

The spelling of 2047729 in words is "two million, forty-seven thousand, seven hundred twenty-nine".